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Q&A from Analog Devices EngineerZone: SigmaDSP/SigmaStudio and DSP discussions (18 topics).
18 topics · 84 messages
Filtered by: #phase ✕
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SigmaStudio General 2nd order block bypass function with Phase Shift enabled
Hi, I'm working on a speaker crossover project based on ADAU1466. Could you please confirm what is the expected behavior of Enable/Bypass button of General 2nd order filter block? I noticed that even
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1st order All Pass Filter formula for phase adjustment
Hello, Since I want to use 1st order All Pass Filter to build the adjustable phase function, the old post has the other way to get 0/90/180/270 degree, but what I want is more precisely so I search th
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Phase modulation with ADAU1701
I need to design a sinusoidal VCO with very deep phase modulation (multiples of 2*PI range). The VCO block under Sources/Voltage Controlled doesn't have phase input, hence I hoped to use trigonometric
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ADAU1452 Random audio phase response on PLL startup
I'm having an issue with a design using the ADAU1452 where the audio phase response changes each time the PLL is restarted (Screenshot shows where I am restarting PLL) or "Link Compile Download" is ex
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Does Phase setting can use coefficient calculate then write in DSP?
Hi, As I know, the filter can use calculation to obtain the coefficient and using MCU to set the DSP to make EQ or High/Low pass filter can be adjusted very free. If I want to use encoder to adjust th
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ADAU1701. I need to build three phase VCO.
Hello all. I am not a very experienced user. I apologize if my question is trivial. Here I did not find the answer. I need a three-phase variable frequency generator (350-450 Hz). Unfortunately, I cou
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How to reset oscillator's phase?
Hi, i would like to reset oscillators phase through Parameter Update. I know there's a VCO Reset Phase block but i need the same phase reset function for other oscillators types. I tried set to zero "
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ADAU1701- Question of making a adjustable Phase control
Hello everyone, I have searched the related question in the forum, and I found this topic: How to use sigmastudio software to realize an external potentiometer to control phase, the phase of the range
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Generating overtones with fixed phases in SigmaDSP processors
Dear colleagues! I would like to share my experience in generating overtones (harmonics) of the sine tone with fixed phase relationships in SigmaDSP processors. For example if we need to generate sine
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VCO Phase Control/Modulation on ADAU1701
Hello all, is there a way to control the phase of a VCO block, in order to have PM (Phase Modulation)? Right now, I am able to create projects with FM which are working perfectly but I would need also
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How to control ADF4351 evaluation board by Matlab
We are trying to build communication between the ADF4351 evaluation board and Matlab. One of our options is to use I2C/SPI adapter, but we want to control this evaluation board by only using USB cable
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IIR cascade FIR, incorrect phase response display
Hello. I'm using chip ADAU 1701, fs=48000. Sorry, I am a newbie in filter designing. I would like to design an IIR Notch filter at 1kHz. I used "ScopeIIR" software to get the IIR coefficients. Then, I
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Is Bessel filter linear phase?
In the General 2nd Order block, you can select a Bessel LPF. Is this digital Bessel filter generated using bilinear transform or some other transform? As I understand, the bilinear transform does not
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Any filter in SigmaStudio avaiable to keep phase unchanged when changing gain?
Normally the phase will be varied with the change of gain when using filter in sigmastudio, but if phase variation too much will impact audio performance. so is there any filter in sigmastudio avaiabl
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Sigma Studio IQ modulator/demodulator
I'd like to use the SigmaDSP for IQ demodulator (and in the future for modulator). I'd like to create a 90 degrees phase shift block (AF -> 300-3000Hz). Have you got any idea how can I do this? (My id
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Phase shift on prototype with ADAU1446 and TI PCM3168
A customer contacted me regarding a phase shift seen on a board using the ADAU1446 and a TI PCM3168 codec. I will try to investigate the cause of this and post my results here. Audio Signal Processors
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How to introduce phase delay to a tone generator
Application: Generation of an error signal. Problem: I want to introduce a fixed phase shift between 0 and 2*pi in the sine waves of two sine tones with same frequency (10kHz..20kHz). The sine tone ge
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Frequency Divider
Is there a module, or combination of modules, which can divide a signal from the frequency generator? My application includes mixing some signals from a sine gen source (or external source) but some o