EngineerZone Forum
Q&A from Analog Devices EngineerZone: SigmaDSP/SigmaStudio and DSP discussions (5719 topics).
5719 topics · 27691 messages
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Aliasing when using Downsampler
Dear Team, I am using the ADAU1452 REV BZ Board. My system Sampling rate is 48kHz . I would be taking input from the oscillator and downsampling it to 8kHz . I know there is a problem with the LPF tha
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ADAU1452 Sigma Studio TCP/IP Safeload write header problem
Hello, I am working on a project where I use the ADAU1452 on a custom pcb. DSP is working fine controlled by USBi or local MCU (export from sigma studio project). For my project I need to control the
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MCLK Source Select on ADAU1467 eval board
Whilst reviewing the schematic for the EVAL-ADAU1467 board, I've noticed an 0R00 resistor (R35) that continuously connects the crystal to the XTALIN/MCLK pin of the ADAU1467 DSP. Does this not comprom
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Self boot method change
Hi Engineer zone, Is it possible to replace the host MCU with a self boot method using EEPROM? If so, please share how to change. BRs, Eliott Audio Signal Processors hardware adau1467 SigmaDSP Audio P
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TDM8 and Dante connections
Hi there, I am developing a DSP board that accepts connections from Dante network audio cards. I have the Dante card set to provide 4 x TDM8 lines to create a 32 x 32 transmission line to the ADAU1467
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Audible noise issue
My customer said that audible noise occurred during development in the environment below. Is it because of the mismatch in sampling frequency of I2S input and output? They want it to work normally whe
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Inquiry Regarding ADAU1401A Application (I2S Connections)
We are currently reviewing the implementation of the ADAU1401A in our project. We have selected this part as it appears to offer the desired features at a cost-effective price point. Our initial plan
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Format of inputs and outputs
Hi, On the board we use a Delta-Sigma encoder/decoder (CS42488). Can we use directly this format in the DSP? or do we have to do some Delta-Sigma to uniform conversion before ? Thanks for your help, I
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Selfboot
Hello, I am working with the AD2428WD1BZ, which integrates the ADAU1452 DSP. I have successfully saved a SigmaStudio schematic to the onboard EEPROM and verified that the selfboot functionality operat
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Volume control from microcontroller
Hi all, I was wondering If it’s possible to control the volume output of the DSP (in self-boot mode) from a digital pin of a microcontroller connected to a multi-purpose pin of the DSP. Any suggestion
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ADC192k down to 12k
Dear community, I am trying to use the ADAU1467-Z evalboard with 192kH ADC in order to decrease latency, and then downsample the signal in the canvas for processing it. After process upsample the sign
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ADAU1701 - Multiple I2S signals
Hi, is it possible to input two I2S sources (same sampling frequency) into an ADAU1701 DSP and mix them to the final output? Thanks in advance for any reply! Audio Signal Processors dsp hardware i2s m
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Issues writing to EEPROM - Was previously working
Hello, I have build my own DSP board based off the ADAU1466 DSP. On the board I also have a EEPROM from Microchip. Its the 25LC1024T-E/SM. It is a 1Mbit SPI EEPROM. I have succesfully written a progra
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How is it possible to look at a net value ?
Hi, I am a beginner and I want to do a volume control using a decibel look up table. Here is the schematics: For the moment I enter a fixed value as input for the lut. When I look at the program, I ca
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Configuration of ADAU1467 multipurpose pins MPx
Hello, I am using EVAL-ADAU1467Z and SigmaStudio+ 2.3.0. In the user guide, one can read that MP15, MP14 and MP7 are connected to DIP Switch S3. These pins are dedicated IO pins, i.e. not multiplexed
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Sigma Studio Plus - Load biquads from file as in old Sigma Studio
Hello! I just started using SigmaStudio Plus. I had limited experience with the old Sigma Studio (by no means a power user yet). After some frustrations I managed to get it setup to write to my DIY AD
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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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RE: i2s from or to ADAU1401 or ADAU1701
Hi! Can you please explain how connecting LRCK and BCLK in/outs would work when I2S out is a master? Imagine the following: There is an external i2s source, a master, driving the clocks. MCLK is the c
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Parametric EQ block has bugs?
The following is a 3-step process that causes 2 separate bugs, would appreciate if anyone has input/if there's a known workarounds. Create a parametric EQ block and enter the 19 filters. I close it an
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Signal Prioritization / Automatically selecting active audio source
Hello all, This is my first post here and I'm a newbie on Sigma but gone through some steep learning curve. Got my ADAU1701 to work pretty good already, which is part of the TSA7804B from Tiny. I have
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How can I config the serial ports of ADAU1452 to use one BCLK and LRCLK to achieve I2S full-duplex communication？
I have an application requirement. I want to use a CODEC to connect ADAU1452, but the CODEC have only one BCLK and LRCLK, and SDATA IN , SDATA OUT. I want to achieve I2S full-duplex communication. I w
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Distortion for superbass no matter what ever I do
Hey everyone. I have a adau1701 board connected to a amplifier and everything is gain staged correctly (0db on the DSP is right before when the amp starts to clip). Everything works well except when I
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Gain Function with adjustable roll-off
Hi all, I am trying to get my head around the graphical programming in Sigma Studio and am stumbling on a "simple" algorithm: I need a roll-off gain, that is: the gain itself is decreased in every sam
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Strange behaviour in "Single Slew Ext Volume" element
Greetings, I'm testing the behaviour of this component (Single Slew Ext Volume) and it seems I've stumbled unto a bug. I've searched the many posts on this forum discussing this component but didn't f
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LED Control
Hello, In the digital output section in the datasheet it says that those pins are not designed for draw static current. But: - Could it control several LEDs (one LED per pin) with 1mA if the maximum i