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Q&A from Analog Devices EngineerZone: SigmaDSP/SigmaStudio and DSP discussions (5719 topics).
5719 topics · 27691 messages
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Why the input signal voltage in SigmaStudio is different with bypass signal voltage
We use signal generator to input 300mVp-p(Peak to Peak on the oscilloscope), but when we measure the output of the ADAU1701(DAC1) it show that the voltage only has 160mVp-p even it's bypass. Why? Audi
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ASRC lock
Hi all, I have an issue with the ASRCs of ADAU1451/2. I use the ASRC to sync an SPDIF signal and 4 I2S signal from the serial ports with the clock of Output 0 and I noticed that if I send audio to SPD
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No I2S output
I have a custom board with a ADAU1362 fitted. This is linked to a separate satellite modem, that is the mister/main. The modem generates the WS (8KHz sample rate) and SCK (512KHz), expecting 16-bit da
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Writing to EEPROM does not work
Hi folks, I have similar issues as described here: Issues writing to EEPROM - Was previously working. I built my own board which is in it's core similar to the 1466 eval board. The EEPROM is of type 2
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How to use GPIO to show audio input?
Hi, I need a GPIO to drive a led to show if there is audio input to 1701. My idea is like below, but it doesn't work. I compare the audio input and a DC level, if the audio is greater, GPIO output 1,
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ADAU1701 filter theoretical gain curve vs measured oscilloscope output mismatch
Hello, We are currently using ADAU1701 + SigmaStudio to design multi-stage IIR filters for hearing-loss compensation. During our experiments, we noticed that the measured output voltages on the oscill
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PROGRAMMING ADAU1787 WITH STM32
Hi iam trying to program my ADAU1787-eval using STM32L496-EVAL using I2C.My control register values are getting updated in the memory of ADAU1787 when i try to program but my sigmaDSP and fastDSP RAM
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frequency domain operation using block schematic
I'm exploring the block operation and frequency domain operation to implement frequency domain ANC. I'm sure there are mistakes in implementation of formula, but that's besides the point I'm hoping to
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Conditioning/filtering of noisy AUXADC input
Hello EZ, I have build a DSP using the ADAU1466. It has been working great for a while know. However, I have mooved it to a new case with a significantly longer wire run for the potentiometer that is
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The calculation method for the coefficient of filter Peaking
Could you please provide the calculation method for the Peaking coefficient of the filter? Thread Notes Santhakumari - Moved from Processors and DSP to SigmaDSP Processors & SigmaStudio Dev. Tool. Pos
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Designing ANC using NLMS Block
adativeattempt2.dspproj Hi there, I’m working on designing an ANC algorithm using the NLMS block in SigmaStudio. However, when I listen to the result, the algorithm doesn’t seem to adapt. For testing,
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ADAU1452 Hardware
Hello, my project requires using the ADAU1452 to acquire ASRC from SPDIF and aims to output via SDATA_OUT1 in TDM8 format (stereo to Dolby audio conversion). Additionally, the ADAU1452 must operate as
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ADAU1787 expanding design to support microphone and another digital input
Hi, I'm using ADAU1787 on our custom board. It is connected to: SPT1 - MCU input. MCU is defined as slave SPT0 - Input from Modem , Output to modem. Modem is Master (is this possible to configure?) AI
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BiQuad Calculation for all-pass filter when using a micro-controller host processor
I am using the Parametric EQ filter block, controlled from a uC (RP2040). I am already calculating 2nd order high/low/peaking/hi-shelf/low-shelf. The https://wiki.analog.com/resources/tools-software/s
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Devkit with 6 inputs
Hi everyone, As you probably know, we are using an ADAU1452 devkit which connects to a CS42448 codec, sourced from Aliexpress. As we may need to integrate the devkit into a more complex system, we wou
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AEC/NR functionality in SigmaStudio+ – workarounds or release plan
Hi everyone, I’m working on a SigmaDSP project and currently testing both the classic SigmaStudio and the new SigmaStudio+. While the old SigmaStudio setup works, for the final design we will need to
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External bass and inverted volume control
I'm using an ADAU1701/1401 for my latest speaker project, and I soon enough found info on this forum about external bass control after not being able to do it myself. What I implemented was that 0-12
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Sharing the MClk across several boards
I'm thinking worst case here but has anyone succeeded in sharing the MClk (from a 12.MHz clock module) across multiple devices on different boards? Surely not so much of an issue on a single board but
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Export Files Params.h
I don't understand why in some cases the param.h file shows the hex value of DC Input entry and in other cases the hex values aren't showed. There is a specific settings to show always either values?
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adau1466
Hello Support Team Guys, Now one of our customers is facing an issue that one of modules in the export system files contains indirect address,but it doesn't contain direct address. without direct addr
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using an external amp
Hello. Pretty much what the title says. I have 2 KABD 4100 boards cascaded and I'm looking for a way to use and external amp to power my sub or a way to put all 400 watts from one board to my sub or e
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signal not detected by adau1701
Hello I got a problem with 1701 detecting the input signal using TDM in. ADC is cs5368, Subordinate TDM mode with MCK=BCK=12.288M and LRCK is 48K(frame clock is /1024 and bck is /4.) From the above pi
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S/PDIF output is it "bit shifted" ?
Hi, quick background to what I am doing - I am working on an S/PDIF receiver in an FPGA so I want to generate a good S/PDIF signal that I can trust and also that I can control what it is outputting, s
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ADAU1452 script quesntion how to set the parameters value by script
Hello Support Team Guys, Please help me to resolve the two issues with my script. The attachment is my script file. The issue 1 is why the input(3-8) cannot be connected with the nxm mixer1. The issue
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MCLK issue and replicable Adau chip
Hello every , and Hello DAVE, I look into this ADIEngineerZone for long time, but this is my first time post here. I have a Bluetooth project using Adau1761, the Bluetooth chip cannot generate MCLK to