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Which STM32 MCU can play voice prompts and audio files (.mp3 or wav) stored on a micro SD card with digital volume control and without external DAC?

I paid someone and she came up with a solution using STM32F103 and claims that it works for wav files using PWM and low pass filter with a digital attenuator. It didn't, and 1 year on I am still looking for the right MCU and the right solutionUM1642...

EKwon.2 by Associate
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  • 2 replies
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STM32 Alexa Voice Services Solution

I am interested in developing Alexa built-in device using your solution mentioned in the Link.But this link also mentioned that "Amazon decided to maintain AVS for IoT system for existing products only. This solution can’t be used to develop a new pr...

RPanc.1 by Associate
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  • 0 replies
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Resolved! USB audio type I IEEE_FLOAT descriptor

Hi all,I am using a STM32H7 and I implemented a composite usb device (CDC + AUDIO recording) using IAD interface descriptor.I can successfully configure the audio interface as type I PCM (I tested both 16 and 32 bit), but if I try to configure the au...

AGhez by Associate III
  • 2228 Views
  • 17 replies
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Hi everyone, I'm looking to design and develop a USB Audio Interface using STM32F4xx series MCUs that could ideally record up to 16 channels of analog audio signals, convert and send to a PC / MAC via USB.

If anyone is familiar with Digital Audio Workstations (DAW's), you can then select the type of audio input device in the application, to then choose which channel to monitor and record.I'm familiar with the process of how to record the incoming audio...

cackland by Associate
  • 524 Views
  • 3 replies
  • 2 kudos