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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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ADAU1787 - Linux driver needed
Hi, I'm working on a custom board, interfacing ADAU1787 via I2S. I have a working SigmaStudio project I tested on the evaluation board. I now need to implement the linux codec driver, on my MPU runnin
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How to start simulation with SigmaDSP ? (for beginners)
Hi, I am a beginner with DSPs and I try to use an ADAU1452+DS42448 board. I have just bought the board and I try to use it, but it is another story !! Dave and Bob said that this DSP is the best one f
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Current Input ADCs
Where can I find more information on the current input ADCs? Audio Signal Processors hardware SigmaDSP Audio Processors adau1701
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Audio Delay versus Sample Rate
When operating the ADAU 1701 with double to fourfold sample rate the audio delay (analoge input to analog output) is not 1/2 or 1/4 compared to 48 kSps as expected. I measure 1/3 and 1/9 compared to 4
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[ADAU1452] Regulations regarding the waveform rounding for the rising and falling edges of the reset signal
Hi, We have a question from Customer. Regarding the reset signal of the ADAU1452, are there any regulations regarding the waveform rounding for the rising/falling edges? We checked the data sheet, but
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Index Selectable Filter - what is the purpose of the number of biquads?
Hello all, I am trying to understand what the number field in the index selectable filter is for. According to the documentation it stands for the numbers of biquads, but what exactly is meant by that
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adau1761 NLMS/adaptive filter question
Hello first time using NLMS, need some help on this project. goal: while ARM is playing music the MIC should remove the music signal from its own speaker. attached is the schematic and the project fil
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adau1466，cs4272 not work
I set the cs4272 to single-speed standalone mode, and use the adau1466 to output a 12.288Mhz clock as the MCLK of the codec. There is no audio output, but the sd pin has a waveform of about 400-500khz
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SPI boot address
Hi, I am working on an application with a ADAU1450 and SPI boot memory. The hardware is quite similar to the EVAL-ADAU1452 and seems to work ok, now I want to write code in the boot EEPROM. A added th
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Compressor RMS Hold
Hi, I would like your help to find a solution for the inappropriate behavior of the RMS compressor that I am using on the ADAU1701. The block used is: Dynamic Processors -> RMS -> Full Range (-90 to +
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Exporting Files from Latest Sigma Studio+
Hi, When exporting the system files from the latest version of SigmaStudio+, I've noticed that the Address to read the value of a level detector is not included, is there any reason for this? Is it no
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[Bug Report] Application Exception with Hierarchy INput, Hierarchy Output and Speaker Response MLSSA Modules
[I'm a brand new newbie to this forum so I apologize if this has been asked and answered already but I've spent a couple of hours now searching and havn't found anthing like this. If it has been answe
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ADAU1701 Reboot Noise Issue
Hi, We have been seeing noise introduced into our system together with normal audio output (from external DAC) but then resolve itself fine with no noise after a power reboot. This will happen intermi
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Is there a way to edit values of cells outside there pre-set limits
I have two of the ADAU1701 chipset and use sigma studio for development, although i get by with the values that are set and there limits. i wish to know if i can go over by a DB or so as a call either
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ADAU1463/1467 SDATA IO settings
Hello Dave, Here is the audio path. FPGA will output word clock to RME sound card to align the output clock with FPGA clock. so no matter RME is slave or master, FPGA will be the master. attached is t
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SigmaStudio+ user interface
Hi, SigmaStudio+ has an ancient user interface. Please develop a new useful and flexible user interface. If possible, the VSCode interface is better and more modern for all users. Best Regards, Audio
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copy/paste of platform blocks does not operate as expected
Copy/paste leaves the app with a settings dialog open and not the schematic (system) view. Example: Start with two blocks selected select copy, then select paste. After a pause the screen looks like t
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Problems setting PLL up on ADAU1452
I am unable to get my custom ADAU1452 board PLL locking. The MCLKIN/OSCIN is driven by a crystal oscillator IC at 3.3V and it looks good on oscilloscope. Checking the PLL lock register never shows loc
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Using SDATAIO pins for a large number of I2S signal lines.
Hello Harish I have some questions about adau1467, how I could use SDATA IO0-7, any examples? I need 16 i2s in and 16 i2s out. or should I start another topic to ask this question? Best regards, Power
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Noise production when DSP is active on dev. Board
Hello This is my first post! I ordered 2 devboards, EVAL-ADUA1701MINZ and EVAL-ADAU1467Z. My test setup: PC -> AD-DSP -> AMP -> Speakers When I connect everything with for the AD-DSP, ADUA1701MINZ, ev
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ADAU1761 PEQ biquad filter question
Hello, ADAU1761.dspproj biquad question again. When we tested the output waveform, we found that the simulation differed from the PEQ window. so which result could we trust? this result is what we exp
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Clock sharing for multiple I2S SDATA Outputs
Hello, For a multichannel project I am using all 4 serial data output ports of an ADAU1466 DSP, each sending 2-Channel I2S (or potentially multichannel TDM) audio data to one of four DACs (expectig 3-
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PDM output
Hi We are trying to route a signal from FDSP channel 2 to PDM output, but the only thing we see on the PDM output is noise. Changing to routing to a different FDSP or SDSP channel does not seem to hav
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Control two different devices and selfboot EEPROM with USBi
Hello, For a dual-DSP project i want to use two different ADAU1466 on one PCB, each equipped with an EEPROM for selfboot functionality. I'd like to program both of them via SPI through one USBi progra
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SigmaStudio+ does not apply the “PLL Input Clock Divider” setting to the hex file, so it is not written to the EEPROM
Hello, I have again found a bug in SigmaStudio+2.3.0: SigmaStudio+ does not apply the “PLL Input Clock Divider” setting to the hex file, so it is not written to the EEPROM! Divide by 4” is always writ