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# Iowegian International

Serious about DSP

## Sitemaps

- [XML Sitemap](https://iowegian.com/sitemap.xml): Contains all public & indexable URLs for this website.

## Pages

- [DSP Design Tools](https://iowegian.com/) - Iowegian International Corporation provides software tools for professional design and development of Digital Signal Processing (DSP) systems. ScopeFIR is a comprehensive tool for designing, analyzing, and modifying complex Finite Impulse Response (FIR) filters. It designs FIR filters via the Parks-McClellan algorithm, as well as all other major FIR filter design methods. ScopeIIR is a comprehensive
- [Download](https://iowegian.com/download/) - Download Digital Filter Design and FFT Signal Analysis Software for Windows Registering ScopeFIR, ScopeIIR, and ScopeDSP are powerful software tools for designing and analyzing Digital Signal Processing (DSP) systems. You may use their Trial Editions free for a 30-day trial period. The full licensing terms for each program can be found in the file "LICENSE.RTF"
- [DSP System Development with ScopeDSP Suite](https://iowegian.com/scopedsp-suite/) - ScopeDSP Suite Professional™ provides a comprehensive set of software tools for DSP system development. It is simply a combined registration (license) to the following Iowegian products: ScopeFIR Professional - Finite Impulse Response (FIR) filter design and analysis ScopeIIR Professional - Infinite Impulse Response (IIR) filter design and analysis ScopeDSP Professional - Sampled-data signal time and frequency analysis Why
- [Purchase](https://iowegian.com/purchase/) - We sell ScopeDSP Suite™, ScopeFIR™, ScopeIIR™, and ScopeDSP™ via the web. You can download them from our download page. You may use their Trial Editions free for 30 days, but to use them beyond the Trial period you must purchase a Registration. You will then receive a Registration Key via e-mail which unlocks the features of the product/edition
- [PayPal](https://iowegian.com/purchase/paypal/) - You can purchase ScopeDSP Suite™, ScopeFIR™, ScopeIIR™, and ScopeDSP™ via PayPal using the Add to Cart buttons below. ScopeDSP Suite Product Cost To purchase via PayPal ScopeDSP Professional Suite 6. Includes: ScopeFIR Professional 6 ScopeIIR Professional 6 ScopeDSP Professional 6 US $699 (Save $198!) ScopeFIR Product Cost To purchase via PayPal ScopeFIR Professional 6 US
- [Support](https://iowegian.com/support/) - We offer support for our products via email. If you have a support question, please send it to us via our Contact page. Our support policies are: We typically respond to support questions in about one business day, though in some cases it may take up to several business days. We offer free Technical Support
- [ScopeFIR Videos](https://iowegian.com/videos/) - How to Make FIR Filter Design Trade-Offs This dspGuru video tutorial shows how to make FIR filter design tradeoffs using ScopeFIR.
- [Cascaded Integrator Comb FIR Filter 1](https://iowegian.com/scopefir/fir-filter-design-examples/cascaded-integrator-comb-1/) - More FIR Filter Design Examples
- [FIR Filter Design Examples](https://iowegian.com/scopefir/fir-filter-design-examples/) - The FIR filter design examples included in the ScopeFIR distribution file are listed below. The frame in the middle of each page contains the HTML file and embedded images that were automatically generated by ScopeFIR to document each FIR filter design project. Advanced Parks-McClellan FIR Filter Example Boxcar FIR Filter Example Brick Wall FIR Filter
- [Site Map](https://iowegian.com/site-map/) - [button]Content[/button] [sitemap] [quiz] [question]Insert question here [/question] [answer]Insert correct answer here [/answer] [wrong]Insert wrong answer here [/wrong] [wrong]Insert wrong answer here [explanation]Add additional information or an explanation for why it’s wrong here[/explanation] [/wrong] [/quiz]
- [About Iowegian International](https://iowegian.com/about/) - Tired of paying a fortune for DSP tools? Since 1997, our mission at Iowegian International Corporation has been to produce high-quality, affordable, user-efficient software tools for Digital Signal Processing. Quality is always the first priority. Our design philosophy is to achieve maximum user efficiency by providing a cohesive, powerful set of features. Our products are
- [Purchase Iowegian Products by Purchase Order](https://iowegian.com/purchase/by-purchase-order/) - We accept Purchase Orders from qualified businesses worldwide. Product Pricing The cost of Registering Iowegian products using a Purchase Order is summarized below: Product Part Number Cost ScopeDSP Professional Suite 6 DSP-SUITE-6 US $999 ScopeFIR Professional 6 FIR-PRO-6 US $599 ScopeFIR Professional Plus 6 FIR-PLUS-6 US $799 ScopeIIR Professional 6 IIR-PRO-6 US $499 ScopeIIR Professional
- [Upgrade](https://iowegian.com/upgrade/) - Version Compatibility Version 6 of all of our products were released in August, 2016. Version 6 products and the corresponding Version 5 products can be installed and run on the same system. If you have already purchased and installed a Version 5 product, you can continue using it on your system, and your use of
- [Purchase Iowegian Products by Mail](https://iowegian.com/purchase/by-mail/) - To purchase directly from Iowegian by US check, or money order, fill out this page, print it out, and mail it with your payment to: Iowegian Intl. Corp. 11223 W. 99th Place Shawnee Mission, KS 66214-2557 USA Name: Address: E-Mail: Order(s): Quantity Product Unit Price (after 5% discount) Subtotal ScopeDSP Professional Suite 6 $949.00 US
- [DSP Data Analysis](https://iowegian.com/scopedsp/dsp-data-analysis/) - ScopeDSP™ provides powerful DSP data analysis features for both the time and frequency domains. Time Data Statistics For Time Data, ScopeDSP calculates the Minimum, Maximum, Inphase Mean, Quadrature Mean, and Magnitude RMS. Frequency Data Statistics For Frequency Data, ScopeDSP calculates the power of each frequency data point in decibels (dB). Assuming the data is a
- [Privacy Policy](https://iowegian.com/privacy-policy/) - This privacy policy discloses the privacy practices for iowegian.com. This privacy policy applies solely to information collected by this web site. It will notify you of the following: What personally identifiable information is collected from you through the web site, how it is used and with whom it may be shared. What choices are available
- [DISCLAIMER AND LIMITATION OF LIABILITY](https://iowegian.com/disclaimer-and-limitation-of-liability/) - This web site ("IOWEGIAN.COM") is a service of Iowegian International Corporation. The information ("Information") accessible by you ("USER") using IOWEGIAN.COM has many sources that are not controlled by Iowegian International Corporation and/or its licensors (collectively "IOWEGIAN"). USER's Duty: USER shall 1) Determine whether the Information complies with USER's needs; 2) Determine whether USER has adequate
- [ScopeDSP: FFT Spectral Analysis Software](https://iowegian.com/scopedsp/) - ScopeDSP™ can generate, read, write, window, and plot sampled-data signals. It features an Arbitrary-N FFT algorithm to quickly perform Time-Frequency conversions, and it calculates many statistics in Time and Frequency. These features, plus a highly refined graphical user interface, make ScopeDSP the premier spectral analysis software tool for use by professionals working in Digital Signal Processing.
- [ScopeIIR: IIR Filter Design Software](https://iowegian.com/scopeiir/) - ScopeIIR™ is the premiere software tool for Infinite Impulse Response (IIR) filter design. Design ScopeIIR provides a comprehensive IIR filter design capability. It instantly designs high-order IIR filters based on the Butterworth, Chebyshev, or Elliptic analog prototypes. It can design lowpass, highpass, bandpass, and bandstop filters, with frequency and gain characteristics you specify. Analysis
- [ScopeFIR: FIR Filter Design Software](https://iowegian.com/scopefir/) - ScopeFIR™ is the premiere software tool for Finite Impulse Response (FIR) filter design. It can: Design multi-band Complex FIR filters of the following types: Parks-McClellan (Equiripple). ScopeFIR can design Filters, Hilbert Transformers, or Differentiators. Its "Simple Filter Specification Editor" allows you to easily design simple single-passband filters, and its "Advanced Filter Specification Editor" gives you access to the full
- [Maximally Flat FIR Filter 2](https://iowegian.com/scopefir/fir-filter-design-examples/maximally-flat-2/) - More FIR Filter Examples
- [Root-Raised Cosine FIR Filter](https://iowegian.com/scopefir/fir-filter-design-examples/root-raised-cosine/) - More FIR Filter Examples
- [Raised-Cosine FIR Filter](https://iowegian.com/scopefir/fir-filter-design-examples/raised-cosine/) - More FIR Filter Examples
- [Maximally Flat FIR Filter 1](https://iowegian.com/scopefir/fir-filter-design-examples/maximally-flat-1/) - More FIR Filter Examples
- [Lth Band FIR Filter 5](https://iowegian.com/scopefir/fir-filter-design-examples/lth-band-5/) - More FIR Filter Examples
- [Lth Band FIR Filter 4](https://iowegian.com/scopefir/fir-filter-design-examples/lth-band-4/) - More FIR Filter Examples
- [Lth Band FIR Filter 3](https://iowegian.com/scopefir/fir-filter-design-examples/lth-band-3/) - More FIR Filter Examples
- [Lth Band FIR Filter 2](https://iowegian.com/scopefir/fir-filter-design-examples/lth-band-2/) - More FIR Filter Examples
- [Lth Band FIR Filter 1](https://iowegian.com/scopefir/fir-filter-design-examples/lth-band-1/) - More FIR Filter Examples
- [Hilbert Transform FIR Filter 4](https://iowegian.com/scopefir/fir-filter-design-examples/hilbert-transform-4/) - More FIR Filter Examples
- [Hilbert Transform FIR Filter 3](https://iowegian.com/scopefir/fir-filter-design-examples/hilbert-transform-3/) - More FIR Filter Examples
- [Hilbert Transform FIR Filter 2](https://iowegian.com/scopefir/fir-filter-design-examples/hilbert-transform-2/) - More FIR Filter Examples
- [Hilbert Transform FIR Filter 1](https://iowegian.com/scopefir/fir-filter-design-examples/hilbert-transform-1/) - More FIR Filter Examples
- [Differentiator FIR Filter](https://iowegian.com/scopefir/fir-filter-design-examples/differentiator-fir-filter/) - More FIR Filter Examples
- [Cascaded Integrator Comb FIR Filter 2](https://iowegian.com/scopefir/fir-filter-design-examples/cascaded-integrator-comb-2/) - More FIR Filter Examples
- [Brick Wall FIR Filter 1](https://iowegian.com/scopefir/fir-filter-design-examples/brick-wall-1/) - More FIR Filter Examples
- [Boxcar FIR Filter Example](https://iowegian.com/scopefir/fir-filter-design-examples/boxcar/) - More FIR Filter Examples
- [Brick Wall FIR Filter 2](https://iowegian.com/scopefir/fir-filter-design-examples/brick-wall-2/) - More FIR Filter Examples
- [A/D Converter Performance Measurement, Part 7](https://iowegian.com/scopedsp/tutorial/adc-performance-measurement-part-7/) - Here is a close-up of the spectrum of the 1.952819824 MHz signal at bin number "3199.5": This is the familiar "Christmas Tree" shape that occurs in DFT spectra around sines which fall somewhere between two bins. In this case, the skirts are symmetrical since it falls exactly in the middle of two bins, but the
- [A/D Converter Performance Measurement, Part 6](https://iowegian.com/scopedsp/tutorial/adc-performance-measurement-part-6/) - But now, after transforming our windowed Time Data to Frequency Data and zooming in a little, we see that the fundamental has grown plumper than a Thanksgiving turkey! Will the real signal line please step forward?! Now there are seven lines where there used to be one. However all of this fits together under Fourier
- [A/D Converter Performance Measurement, Part 5](https://iowegian.com/scopedsp/tutorial/adc-performance-measurement-part-5/) - So what can we conclude from this analysis? The performance of this converter is very good in terms of SFDR, which is the key specification in its intended application. After many months of refinement, we have been able to measure an SFDR that is actually slightly better than the manufacturer's specification! The component that limits
- [A/D Converter Performance Measurement, Part 4](https://iowegian.com/scopedsp/tutorial/adc-performance-measurement-part-4/) - Our A/D test signal has been transformed into the frequency domain. We can now measure its performance using the component frequencies listed by ScopeDSP. Here are the first few items in the A/D Frequency List: The Frequency List takes a little getting used to, but soon becomes indispensable for this kind of analysis. First it
- [A/D Converter Performance Measurement, Part 3](https://iowegian.com/scopedsp/tutorial/adc-performance-measurement-part-3/) - Here we have zoomed in around the distortion component near 1.1 MHz. Note that the plot has auto-scaled to show more vertical resolution, given that there is less dynamic range in the data. However, aside from being able to pin down the frequency and amplitude of this component more accurately, this plot really doesn't show
- [A/D Converter Performance Measurement, Part 2](https://iowegian.com/scopedsp/tutorial/adc-performance-measurement-part-2/) - Here, the A/D's Time Data has been transformed from the Time Domain into the Frequency Domain using the Fast Fourier Transform (FFT) provided by ScopeDSP™. We have transformed all 8192 data points of a 1.953125 MHz signal which was sampled at 5.0 MHz, and have not windowed the signal. The 1.953125 MHz signal falls exactly
- [A/D Converter Performance Measurement, Part 1](https://iowegian.com/scopedsp/tutorial/adc-performance-measurement-part-1/) - When you build an A/D converter into a circuit, as part of a system, the first thing to do is to measure its performance. The reason is that A/D converters are very layout and bypass sensitive; the A/D specifications provided by the manufacturer were measured using an idealized test fixture; probably your implementation isn't quite so ideal, and requires
- [How to Measure A/D Converter Performance](https://iowegian.com/scopedsp/tutorial/) - In this tutorial, we show how to measure A/D converter performance using ScopeDSP. Part 1 - The time-domain signal Part 2 - The signal spectrum Part 3 - Zooming in on the signal spectrum Part 4 - Analyzing the frequency components Part 5 - Some initial conclusions Part 6 - The effects of windowing Part
- [Raised-Cosine FIR Filter Design](https://iowegian.com/scopefir/tutorial/raised-cosine-fir-filter-design/) - Raised-Cosine filters are commonly used in digital data communication systems to limit Intersymbol Interference (ISI). The Impulse Response of a Raised-Cosine filter is zero at each adjacent symbol period. In this example, we use ScopeFIR™ to design a Raised Cosine FIR Filter. Specifying a Raised-Cosine filter is straight-forward, and requires only the "rolloff factor" (often
- [Windowed-Sinc FIR Filter Design](https://iowegian.com/scopefir/tutorial/windowed-sinc-fir-filter-design/) - In this example, we do windowed-sinc FIR filter design using ScopeFIR. Windowed-Sinc filters are based on the idea that a "brick-wall" filter in the Frequency domain corresponds to a "sinc" function (sin x / x) function in the Time domain. However, sinc functions have infinite length. Therefore, the sinc function needs to be truncated to
- [Band-pass FIR Filter Design](https://iowegian.com/scopefir/tutorial/band-pass-fir-filter-design/) - This example uses ScopeFIR's Parks-McClellan method for band-pass FIR filter design. ScopeFIR's Advanced Filter Specification Editor allows you to enter the desired filter specifications by describing each passband and stopband. Compared to ScopeFIR's Simple Specification Editor, the Advanced Specification Editor is primarily useful when: You need multiple passbands and stopbands. You need to design Differentiator or
- [High-pass FIR Filter Design](https://iowegian.com/scopefir/tutorial/high-pass-fir-filter-design/) - Here, we design a high-pass FIR filter using ScopeFIR. Our first example, did the job of making a CD sound like a telephone by using a low-pass filter. Next, we try a high-pass for that purpose. This will at least take all the bass out. We require that the filter have at least 40 dB
- [Low-pass FIR Filter Design](https://iowegian.com/scopefir/tutorial/low-pass-fir-filter-design/) - Our first example, "lowpass.sfs" does the job of making a CD sound like a telephone by using a low-pass filter. We require that the low-pass have no more than 3-dB of ripple up to 3 kHz, and at least 40-dB of attenuation above 10 kHz. This is a simple 10-tap low-pass filter. The Simple Specification
- [FIR Filter Design with ScopeFIR](https://iowegian.com/scopefir/tutorial/fir-filter-design/) - The following is a brief tutorial on how to use ScopeFIR™. After explaining a few things, we design three simple filters, a lowpass, a highpass, and a bandpass. ScopeFIR designs filters using specifications you provide. For designs which use the Parks-McClellan algorithm, ScopeFIR provides two types of filter specification editors. The first type is the
- [ScopeFIR Tutorial](https://iowegian.com/scopefir/tutorial/) - In this tutorial, we show how to design a variety of Finite Impulse Response (FIR) filters using ScopeFIR. FIR Filter Design with ScopeFIR Low-pass FIR Filter Design High-pass FIR Filter Design Band-pass FIR Filter Design Windowed Sinc FIR Filter Design Raised Cosine FIR Filter Design
- [Pole-Zero Plots](https://iowegian.com/scopeiir/pole-zero-plots/) - ScopeIIR™ provides sophisticated Pole-Zero Plots as part of its IIR filter design and analysis capability. Its Pole-Zero Plot shows the Z-domain poles and zeros of the filter's transfer function. Poles are indicated by "X" and zeros are indicated by "O". The Z-plane is represented with real values along the horizontal axis and imaginary values along the
- [Advanced Parks-McClellan Example](https://iowegian.com/scopefir/fir-filter-design-examples/advanced-parks-mcclellan/) - The following is an example of a FIR filter designed by ScopeFIR using the Parks-McClellan algorithm. The frame below was contains HTML filter design documentation that was automatically generated by ScopeFIR.
- [Shop](https://iowegian.com/shop/)
- [Plots](https://iowegian.com/scopedsp/plots/) - ScopeDSP™ displays Time and Frequency Data in the following plot formats: Inphase Quadrature Complex: Inphase and Quadrature Magnitude Phase Polar: Inphase versus Quadrature Histogram ScopeDSP provides following plot styles: Line Dot Connected Dots Bar Stem Vertical Line Bar Typical plot choices are Complex/Line for Time Data and Magnitude/Bar for Frequency Data. However, these formats and styles
- [Signal Generation](https://iowegian.com/scopedsp/signal-generation/) - ScopeDSP™ features two ways to generate signals: the Waveform Generator and the Signal Generator. Waveform Generator ScopeDSP has a Waveform Generator feature which generates a specified number of samples of a complex waveform either at a specified frequency, or with a specified number of cycles. It can generate real or complex waveforms of the common
- [Fast Fourier Transform](https://iowegian.com/scopedsp/fast-fourier-transform/) - ScopeDSP transforms data between the time and frequency domains using mixfft, which implements the flexible and highly efficient Mixed-Radix Fast Fourier Transform. The FFT is functionally equivalent to its more general cousin, the Direct Fourier Transform (DFT)--it's just a lot faster when computing transforms of more than a few points. ScopeDSP can do FFTs for
- [DSP Data Manipulation](https://iowegian.com/scopedsp/dsp-data-manipulation/) - ScopeDSP™ provides a powerful set of features for DSP data manipulation. Data Ranges ScopeDSP allows you to define "data ranges" if you want to work with only a portion of a data file. A data range is just a subset of data that has been read from a file or generated by ScopeDSP. Of course,
- [ScopeDSP Frequency List](https://iowegian.com/scopedsp/frequency-list/) - Under construction
- [Plot Examples](https://iowegian.com/scopedsp/plots/examples/) - Under construction
- [Contact](https://iowegian.com/contact/) - You can send us a message using the contact form below.
- [Data File Formats](https://iowegian.com/scopefir/data-file-formats/) - Iowegian's ScopeFIR™ and ScopeDSP™ can read and write Real or Complex Data in a wide variety of common Data File Formats: Text Formats: C (array initialization statements) -- Useful for doing DSP in C/C++. Floating Point -- the most portable data format known to Man. Integer. Hexadecimal ("0-F" characters) -- Useful with many simulators. Binary

## Products

- [ScopeDSP Professional Suite 6](https://iowegian.com/product/scopedsp-suite/) - ScopeDSP Professional Suite 6. Includes ScopeFIR Professional 6, ScopeIIR Professional 6 and ScopeDSP Professional 6.
- [ScopeFIR Professional 6](https://iowegian.com/product/scopefir-professional/) - ScopeFIR Professional 6™ is the premiere software tool for Finite Impulse Response (FIR) filter design for Windows. It can design, analyze and modify FIR filters using a wide variety of design algorithms.
- [ScopeDSP Professional 6](https://iowegian.com/product/scopedsp/) - ScopeDSP Professional 6™ can generate, read, write, window, and plot sampled-data signals. It features an Arbitrary-N FFT algorithm to quickly perform Time-Frequency conversions, and it calculates many Time and Frequency statistics.
- [ScopeIIR Professional 6](https://iowegian.com/product/scopeiir/) - ScopeIIR Professional 6™ is the premiere software tool for designing, analyzing, and implementing Infinite Impulse Response (IIR) filters. It can design filters from Butterworth, Chebyshev, and Elliptic prototypes, and lets you to adjust the resulting poles and zeros to fine-tune your IIR filter design.

## Product categories

- [Uncategorized](https://iowegian.com/product-category/uncategorized/)