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Q&A from Analog Devices EngineerZone: SigmaDSP/SigmaStudio and DSP discussions (448 topics).
448 topics · 1990 messages
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How to implement real-time convolution using SigmaStudio function blocks for ADAU1787
Hi everyone, I want to implement FxLMS-based ANC on ADAU1787 and I have no idea how to implement the convolution with real-time audio signal and the dynamic coefficients using SigmaStudio function blo
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FDSP samplerate and SigmaStudio Fs setting
Hi My project is running 192kHz on ADC01 used for FDSP and 48kHz on ADC23 used for SDSP. In the schematic editor I'm having 48kHz (default) as the sample rate. When setting the filters transfer functi
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Conformal coating on ADAU1787
Can conformal coating be applied on the codec ADAU1787 without any compromise on its operation? hardware ADAU1787 Integrated/Special Purpose A/D Converters Audio CODECs
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ADAU1787 NLMS filter
How do I use Nlms filter? Could you provide an example? I want to perform ANC on a microphone. hardware Integrated/Special Purpose A/D Converters Audio CODECs
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Inquiry regarding High-Performance ANC Solution for Headphone
To the Analog Devices Technical Support Team, Hello, I am the Lead Product Strategist at a tech startup based in South Korea. We are currently developing a premium wireless headphone targeting mass pr
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ADAU1787 Vs ADAU1797A vs ADAU1467
Hello Team, Kindly answer below points. Which help me to decision making in part selection. Application: Primary path: I2S, Secondary path: 4 Analog Microphones(2 Feedback and 2 feedforward). to devel
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ADAU1467 Vs ADAU1787 Vs ADAU1797A
Hello Team, Kindly answer below points. Which help me to decision making in part selection. Application: Primary path: I2S, Secondary path: 4 Analog Microphones(2 Feedback and 2 feedforward). to devel
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NLMS ANC Implementation (secondary path estimation)
Hello Everyone, I am starting to experiment with ANCs and I have a board here with the ADAU 1787. I've noticed that it provides only the NLMS block as an adaptive solution, while other series provides
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ADAU1467eval board DAC stage volume attenuation
hi all, i've got an ADAU1467eval board, I've done a couple of apps for it, mainly to drive fullranges, mids and sub speaker thru with a multichannel power amp fed with crossed over and equalized signa
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SigmaDSP running 32kHz - no interface support
Hi, I want to run the SigmaDSP in 32kHz sample rate as I'm running out of MIPS. 24kHz samplerate is too low signal bandwidth. Is that posible? I can select it in the SigmaStudio, but I can't select it
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PLL lock issue on ADAU1777
Hello, I have a problem with the ADAU1777 DSP mounted on a PCB. I am unable to write to certain registers, namely DAC0 mute and DAC0 enabled. I have seen that this is because the DSP's internal PLL mu
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Low Latency ANC Implementation
Hello, I'm looking to find a board suitable for an ANC project I've been working on. I've currently implemented my one channel ANC system using a FIR filter with 1024 taps, however everything is curre
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Multible compressor curves - saving MIPS
Hi I need a compressor with gain output. The user shall be able to select between several different compression curves - and I'm running low on MIPS so I can't just run several of them in parallel. Wo
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Thermal Parameters for the thermal analysis
Hi team, In our development project, we are using following ICs and we need to do the thermal analysis for the PCB. For the analysis, we require the θJA (°C/W), θJC (°C/W), θ
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Design support for AGC funtion
Hi, I'm looking for an AGC function in the SigmaDSP part for leveling an input signal within a certain range, coming from an unknown voice source (various types of radios). It's seems there is not a b
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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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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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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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Can the phase-locked loop of the ADAU1787 operate at 98.304 MHz? Can the speed of BCLK reach up to 49.152 MHz at its maximum?
Hi! When I was using the ADAU1787, I employed the TDM mode of I2S and found that the maximum speed of BCLK was 24.576 MHz, and the sampling rate for 16 channels was 192K. However, my application scena
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adau1787 Control volume with external switch
Hello, I previously used the eval-adau1761 and had experience controlling the volume with buttons. I switched to the eval-adau1787 development board and am trying to implement the same functionality w
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Regarding the issue of the ADAU1787's power-on startup, the normal power supply (DVDD) does not output any voltage.
Hello! I made a circuit board that consists of 3 ADAU1787 chips and one MCU.However, I have encountered some problems recently. I have attached my AD project files and a screenshot of the ADAU1787 har
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1 crystal and 1 EEPROM for 2 ADAU 1787
Hello, We would like to connect 2 ADAU 1787 on the same Crystal to obtain the best synchronisation and same EEPROM so during the Boot Both ADAU will be programmed one after the other. 1. Is it possibl
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ADAU1787 serial port latency
Hi All, A project I'm starting on soon ideally would have lower noise and distortion figures than what the on board ADC's and DAC's of the ADAU1787 can do. Is the latency through the serial ports and
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ADAU1772 Delay Block
Hi, I would like to have a delay block in SigmaStudio for the ADAU1772. Is this possible? I have the ADAU1772 eVal PCB and SigmaStudio, but I don't see the delay block anywhere in the device tree for
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Using MP16 as SDATAIO input pin
Hi, I have a custom PCB that uses 3x AD1939, connected into an ADAU1467 via the serial data pins. I have all inputs using the dedicated SDATA_INx working correctly in I2s operation, however I'm strugg