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Q&A from Analog Devices EngineerZone: SigmaDSP/SigmaStudio and DSP discussions (58 topics).
58 topics · 307 messages
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Shift incoming I2S data left 7 bits
For reasons that are too long to explain here, the I2S data is arriving (logically) shifted right 7 bits. This is fine because it's really just 16 bits of valid data. Before I can use the data I need
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Help with Measuring Input Volume and Setting that Volume as Output
Hello all, I recently bought an ADAU1467 Eval Board and, as a newbie to this kind of thing, am trying to get familiar with this tech and the SigmaStudio software. I am trying to make a schematic in Si
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Add two input channels to ADAU1701
Hello: I am looking to add two analog channels to the inputs of the ADAU1701, presumably using the i2s interface. Can you direct me to any parts suggestions for the ADCs and any suggested reference sc
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Issues with serial input ports
Hi all, I'm having trouble getting the serial input ports other than the first one to work. This is my setup: Serial input port 0: it's connected to an ADC that acts as an I2S master. Serial input por
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How to properly use DC Input Entry
Hi, I want to use DC Input Entry to index ISF. So, if I'm using 1467 - 32bit, according to AD Wiki I need to use integer value for ISF: 32.0 But before that I wanted to debug input value with a Readba
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ADAU1701 IIS input 192Khz signal to enable filter, DAC playback has noise
Specific operation description: As shown in the schematic diagram above, currently only one General 2nd filter is added, set to hpf and 60Hz corner frequency. Set the sample rate to 192K and the DSP c
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adau1701 max in and output
Hello! I would like to know more about the capabilities of the ADAU1701. The DSP can handle 6 inputs and 6 outputs at the same time? I would just put a delay on some output channel. In addition, I wou
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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
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add in XLR input
HI i built a stereo 2.1 speaker beginning of the year. It runs off the sure wondom jab5 amplifier with built-in adau1701 dsp. I currently have it running using just Bluetooth and it works perfectly we
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Differential mode input path
Pls send me the path for Differential input to ADAU1761. Will giving input to LINP and LINN is sufficient or do I need to use both left and right channel? Screenshot is attached. Pls reply quickly. Au
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external ADC and ADAU1452
I have connected a simple stereo ADC : ADC Analog to Digital Converter WM8782 I2S 24Bit from https://www.audiophonics.fr/en/devices-hifi-audio-adc/adc-analog-to-digital-converter-wm8782-i2s-24bit-192k
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Adau 1467 Input 32/33 does not work
Hello everybode My adau 1467 does not work properly channels 36/37 work but 32/33 does not work i need but both for once a microphone and once for music can someone help me trying for the whole day Th
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csr867 i2s connection with adau1401 not working properly
I have a CSR8675 Bluetooth module with I2S output that is connected to my ADAU1401. Data is connected to MP0, LRCK to MP4, and BCK to MP5. I have then configured the GPIO in sigma studio. When I conne
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ADAU1787 I2S output?
I want to use ADAU1787 for use in a stereo 2-way application that utilizes I2S input, and output by I2S and both DACs. The problems I have run into: Using SigmaDSP Serial Audio input, no signal is com
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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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ADAU1701 ADC external resistor minimal value
Hello! I'm explaning all things but I would be glad if someone could just confirm or disprove the following third sentence ;-). I'm working on a wearable voice amplifier project for which volume and w
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ADAU1701 SERIAL/ANALOG INPUT
Hello i'm new in the world of the audio DSPs, i want to create an audio effect system that will be manipulated by 4 potentiometers and 3 buttons, they should control the amount of effect such as : pit
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Setup a software controlled DAC/ADC through i2c with ADAU1466
Hi everybody, I'll detail the board as much as I can: So, the board have a ADAU1466, 4x PCM5122 and 1x PCM1865, both ADC and DAC are software controlled through i2c, with its respective addresses corr
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Knowles mic to ADAU1701
ADAU1701 and Knowles mic SPH0645 Thank your for your help on what may be a newbie problem. I am trying to use the Knowles SPH0645 mic as an input to the ADAU1701. As I understand it, the ADAU1701 shou
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ADAU1467 input selector toggle switch
Hi All, I'm on ADAU1467 and like to make an input selector using a momentary normaly open switch. On the board, I use "MP14" pin for the switch input and GND. 3 stereo inputs are availables. There is
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alternative to AD8608 op amp for active filter design - ADAU1701
Hi all, I've been looking to implement an active reconstruction filter on the DAC output of my custom ADAU1701 however the op-amp recommended in the datasheet seems to be end of life and highly priced
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Adau1701 dac output passive vs active.
Hi guys, I'm not sure which type of adau1701 output I should use (Passive vs Active), what are the advantages of one over the other, not to mention the cost? When using AD8608 or another operational a
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ADAU1787 i2s input to DAC Output with filters
Hello, I want to pass the incoming i2s signal (from a bluetooth to i2s device) to EQ Filter and then as output to the DAC. I used this as an example, but removed the FDEC: ADAU1787 two-way bluetooth s
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ADAU1701: Automatic analog input detection
Dear Team, Is there a way to automatically switch input channel to analog input when "line in" mini jack is connected? And then switch it back to i2s when analog input is disconnected? If so, what is
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EVAL-ADAU1452 - distortion on i2s inputs
Hi there, I have an external i2s source which I connected to my logic analyser to confirm a solid digital signal: It shows a 3MHz SCLK, 48kHz LRCLK and the i2s analyser gets good 24-bit data values. I