The only down side is the low memory of Arduino uno allows us to play a audio of approx 4-5 sec but you can use ARDUINO MEGA to solve this It’s silly to start with MP3 and then decompress it to PCM but if you want to copy him you may have to do the same thing.īut he says, time and time again that this will not work with a Mega. The PCM version is (somehow) loaded into the Arduino. That’s confusing… But, it does NOT play MP3… It plays MP3s that are decompressed (decoded) and then “encoded” to PCM.
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He’s got a file called PCM.ZIP and that includes a file called EncodeAudio.exe.īut the Arduino can only play 16 bit PCM 8kHZ audio mp3 & that mp3 should be coded using a encoder software So, I was wondering if anybody knew if there was a software solution to converting an MP3 file to the Arduino
But, that’s NOT a good learning project for a beginner!
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It normally uses an SD card but if you can understand how the code works it shouldn’t be too hard to hard-code a few seconds of audio instead of reading from an SD card. This free online MP3 recorder only works on Windows 10/8/7 computer.
It has the capability to capture sound from both system audio card and your microphone. If this is a learning project I suggest you study TMRpcm. Apeaksoft Free Online Audio Recorder is one famous MP3 audio recording software which allows you to record your computer audio to MP3. Or, maybe the Raspberry Pi (which has audio built-in) may be a better option. The cost will be about the same as an Arduino but you’ll get better quality, more memory storage (with an SD card) and it will be WAY easier. If you just need to play audio without any software-features, there are audio boards/shields that work without a microcontroller. What are YOU trying to do? Is this a learning-project? Do you need to play a few seconds of (low quality) audio cheaply? I don’t know how this is supposed to work and I’m not going to dig-into it. For now, I'd recommend to use the ESP-ADF directly. There seems to be a third-party library that plays MP3 on Teensy, but no official support.ĮSP32 can also do audio, as mentioned earlier, but I don't think the Arduino support is there (yet?). Boards like the Due also have some hardware for audio, but the Teensy software support is far superior. Some more powerful boards like the Teensy 3.x boards have the necessary hardware to do serious audio (I²S interface with FIFOs and DMA, plenty of RAM and processing power). The 8-bit AVR Arduino's are not suited for audio, not even if you use WAV files. There's also external chips that can play MP3 files (DFPlayer, for example). It should be noted that there are Arduino-compatible boards that support MP3 decoding, like the ESP32 using the ESP-ADF framework.
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On Linux, it just works, on Windows, you had to install ffmpeg/lame encoders (but I haven't used Windows in years, so it might've changed). Strange, I've been using Audacity to export MP3 files for years. My version of Audacity won’t do that, but then I have an old one. I actually think he might be fooling himself that he is saving the file as an MP3 in the first place.