Questions tagged [mp3]

Anything related to MP3 digital audio format, i.e. a format for digital audio files, and related technologies.

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GPD2846A mp3 module with headphones?

The GDP2846A module has an in-built 2W amplifier which is fine for a small speaker but not for a pair of headphones as it is indeed way too much. I've thought of directly taking the DAC outputs (...
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Does an amplifier consume any power when nothing is connected? (GPD2846A built-in 2W amplifier) [closed]

The GPD2846A module has a built-in amplifier into it. However, I want to use it with my headphones which don't require 1-2W (they are definitely going to distort sound and possibly be damaged). So I ...
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2 votes
1 answer
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Speakers: danger of blowing things up

I have an MP3 sound chip module from Talking Products. 4.5 volt battery driven 40mA with an 8 Ohm. 0.5 Watt speaker. I briefly plugged in two 4 Ohm 3 Watt speakers and they worked (and sounded much ...
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How to detect if a TRS cable is connected to a MP3 player output?

Imagine I have a MP3 player and one male-to-male TRS cable that could be connected or not to ...
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Any solution to avoid humming sound / speaker noise for MP3 bluetooth module?

So I have here sub woofer Simbadda CST 5100N and I want to convert it to bluetooth, so bought an MP3 bluetooth module to convert it. The module needed 5 to 12 volt DC to operate. Inside the speaker, ...
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Schematic Critique - ATMEGA328P & VS1063 [closed]

My knowledge in PCB design is very limited, so I've been trying to learn as much as I can on my own. Some feedback on my first design would be incredibly helpful! Description ATMEGA328P "A" is ...
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2 answers
5k views

DFPlayer + amplifier give weird noise

I connected a DFPlayer with a PAM8403 on pin DAC_R like this: I also added capacitor on the supply line. Here the sound i have from the speaker: You can lisen here: https://www.dropbox.com/s/...
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2k views

Alternative for the DF Player (mp3 playback module)? [closed]

The DF Player and all it's clones are super cheap on Aliexpress and similar websites, one can be bought under $1.5. The problem is that the low power state of the module is non existing with around ...
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DFPlayer Module Sleep mode working for anyone?

I'm trying to put a DFPlayer module into sleep mode. The command seems to be: 7E FF 06 0A 00 00 00 FE F1 EF. The normal power consumption my supply is showing (when the module is idle) is about 15mA, ...
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yx5200-24ss mp3 player schematic

i'm sorry for asking a stupid question, but currently i'm making a simple mp3 player with yx5200-24ss chip. Please read the attached schematic below: Is it alright if i'm not using pin 15 and pin 16 (...
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VS1053B Audio Codec and MP3 Question

For Arduino there are VS1053b-based MP3 shields and I do not understand some points. I asked for MP3 format but it can be generalised for other formats as well. When a sound is recorded and encoded ...
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Will an arduino output pin set low ground a pin on a DFPlayer module

I have a DFPlayer MP3 module I'm using for a small soundboard project. I have a button that grounds ADKEY1(Pin 12), which triggers playing the next MP3. I'm adding an Arduino into that mix that I want ...
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3 answers
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DIY Multi-Input Audio

Edited, see bottom of this post. What would be the best method for preventing damage to multiple audio input devices that are connected to a home made audio patch panel? Im wanting to make a device ...
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2 answers
195 views

Converting headphone signals into MP3 using Arduino

For my project, I am looking for a way to take headphone audio signals (from TVs and other appliances), convert them into MP3 and send them over WiFi to a remote device (PC or other) using Arduino UNO ...
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1 vote
1 answer
341 views

Simple Audio Sampler And Looper

I am seeking to build a small drum pad that can trigger short mp3 files. Here there are a lot of specifications and I don't expect to have everything explained, but any tips on how to go about making ...
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3 answers
276 views

creating mp3 device playing sound in specific time [closed]

I need help with creating device that will be able to play sound (can be recorded or from mp3/wav...) at certain time, for example at 8:00PM, 8:15PM; 8:30PM ...until 5:00AM. Device must be powered ...
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-2 votes
3 answers
278 views

Can I swap any two lithium cells on an MP3 player / camera, etc? [closed]

Lithium batteries commonly have +/- and temp monitor connections. I'm pretty sure I can swap a 290 mAh MP3 battery with a 1400 mAh battery, it will charge very slowly. Can I swap the temp sensor ...
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-4 votes
1 answer
67 views

Supply high power to mp3 device [closed]

i have an old mp3 device , by wrong i supplied a high volts to it through the battery place, Now it isn't work . By guessing . Which part of it's board has affected by this high power, to replace it?...
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1 vote
1 answer
2k views

On the fly digitizing audio from analog audio jack

If I am correct, I believe that all normal audio jacks (like the ones you have to your PC, traveling to your speakers) are analog. Is there a way (perhaps with a high speed ADC) to convert it to ...
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2 votes
2 answers
5k views

MP3 player shield makes noise

I'm using the mp3 player shield from sparkfun and an Arduino UNO. Everything is OK, I formatted my Samsung micro SD cards with FAT, I converted mp3 files with ffmpeg, I load the examples file and ...
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-3 votes
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Car CD reader mod to read mp3 disc

I read the article: Modding a CD ROM drive to read DVDs. In my car trunk I have a 6-CD changer. However, it can read only audio CDs. Would it be possible to change the laser head (or adjust it) to add ...
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  • 207
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Why are some mp3 players so expensive?

I have noticed that mp3 players around the 32Gb area seem to be fairly expensive; I haven't seen any for less than £150. Conversely, players with smaller storage can be found at a much lower price, ...
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-6 votes
1 answer
382 views

Headphones with 8 ohm speaker [closed]

How can I build headphones that could play music and fit into a 4mm headphone jack? An example of this would be the headphones that come with an iPod.
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-1 votes
1 answer
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hardware component for playing mp3 [closed]

I have a software + hardware project that I need some help with. I built an algorithm that finds certain patterns in audio, the system works great, I reproduce the audio using a simple mp3 player + ...
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3 votes
2 answers
5k views

Playing .mp3/.wav file using AVR ? How

I want to play a small .mp3 file using AVR ? How I've been googling with no good result , Those are the result of m googling : http://www.beyondlogic.org/pic/ringtones.htm http://www.avrprojects....
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24-bit DAC + D-class amplifier in singlechip - good solution for pocket MP3 player?

I am doing personal project - portable MP3 player. Goals are sound quality + power efficiency. Price is not limited to a reasonable amount (100-200$ in parts is ok) Will single-chip DAC+D-class ...
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  • 3,171
2 votes
1 answer
318 views

Help finding a design house to build our MP3 player [closed]

We used an Asian design house to design, program and build our custom MP3 player. The chip we used (Sigmatel) is no longer avaialble and the DH does not do this type of work anymore. We are looking ...
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