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Q&A from Analog Devices EngineerZone: SigmaDSP/SigmaStudio and DSP discussions (19 topics).
19 topics · 91 messages
Filtered by: #multiple ✕
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Process each channel in a TDM4 input stream
Hi, I stream TDM4 signal to ADAU1452 sigmaDSP through SDATA_IN0. I want to process each channel from this TDM4 signal (Filter and maybe more). How can I do it? When done processing each channel, I nee
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Can I use this circuit to use GPIO to control MUX ?
I want to use a GPIO to control a MUX in DSP. My GPIO connects to a hardware switch, when switch to SRC1 , it pulls high , when switch to SRC2, it pulls low. Then , I use this curcuit to control MUX i
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ADAU1452 Slave Microcontroller port & USBi
Using a Teensy 4.1 to control ADAU1452, so the tutorial written for the Teensy 4.0 is really helpful, thanks. My workflow is to develop and test the Sigma Studio design and use a USBi interface to loa
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How to correctly convert GPIO input (23.5) to 28.0 number format?
Hi, i'm a bit confused about how to use a GPIO-input with the Index Selectable Slewing Mux. The GPIO-Input outputs the values 0 and 1 in 23.5 Number format but the Mux awaits the values in 28.0 format
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Problems with EVAL-ADAU1452RevBZ in TDM mode
Hi, I'm trying to develop a multi-canal system with ADAU1452 in TDM16 mode that communicates to ADAU1966A in Standalone Mode (TDM16, Slave serial audio interface and 256 × Fs ). I control the DS
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Downsample - Extract only odd / even samples
Hello! I have the following problem. I have an 96k input signal that I want to send it through a 48k domain. This means that I need to send two packets of data in 48k domain. In order to do that, I ne
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how to impliment 4*1 multiplex in ADAU1701?
hi, i am using ADAU1701. we have four different signal with different frequencies. i want to send only one wave to output by using two switches selection. Just like 4*1 multiplexer with 2 delectable l
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One USBi, two 1701 with separate eeproms?
Looking for advise on feasibility of a system with a single USBi interface and two 1701 SigmaDSP's each with their own EEPROM for self boot. I would like to have the ability to have a single Sigma Stu
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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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What is the proper way to use the beamforming block with more than 3 microphones?
I am using the Griffith's Jim Beamforming block. I would like to use it with a linear array of 6 microphones. This post SigmaDSP Two Microphone Beamformer implies that the block can be cascaded, but I
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1701 Graphic EQ multiplex adc pins
Hi I'm wondering if there is an easy way to multiplex the analogue inputs on the 1701 so I could have say a 13 band graphic eq with external slider controls? Obviously a few bands is easy but I cannot
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A -1701 FM MPX Demodulator
This is a just-for-fun project, for which no claims are made that it's optimal. I just drew it up in half an hour a few months ago, and then tweaked the thing until it worked. The incoming composite s
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How do I multiplex 4 separate microphone channels on a ADAU1761
Hi, We are working on an application where we need to process the signal from 4 separate microphone channels by multiplexing the stereo ADC contained within the ADAU1761. I have a copy of SigmaStudio
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Auto-select the mux input with signal (help)?
There maybe something on this already in this forum, if so I apologies for the repeat but I couldn't find it. My application is this: I have two stereo analog inputs that run into an indexed multiplex
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illegal feedback error from double-pole MUX
Hello all, The circuit below uses a stereo, three-input mux as a DP3T switch where the "left" section chooses between two DC sources for the filter's Q input, and the "right" section selects filter or
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Wiring - Multiple DSP boards
Dear Sirs I've started a project to process 8 in x 16 out audio mono channels. Drawing on Sigma, I've found that I need 5 DSP's to do it. So I need some help on wiring and choose some parts of IC's (4
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Pushbutton Toggle Multiplexer
A SigmaDSP user recently asked me how to make a project with multiple signal paths and select a path using GPIO. Here's an example of that. multiplexer sigmastudio gpio pushbutton
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multiple ADAU144x system
I'm having trouble using a SigmaDSP as an I2S slave. In all the examples I see SigmaDSP as a master but in a multi-DSP system one will be a master which drives another SigmaDSP slave and a slave codec
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Controlling two SigmaDSPs ADAU1701 with one microcontroller
Hi everyone, i want to make that a microcontroller PIC controls two DSPs ADAU1701 at the same time. The PIC has to load the same signal-flow into the two DSPs but the DSPs may have different settable