Category Archives: digital audio hacks

DIY Pocket MP3 Player

When [Neutrino-1] saw DFRobot’s DFPlayer module, he decided he wanted to make his own retro MP3 player. This tiny module comes packed with a ton of interesting capabilities such as EQ adjustment, volume control, and a 3 watt amplifier amongst other things. It can even play ads in between songs, …read more

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Posted in arduino pro mini, DFRobot, digital audio hacks, FAT16, FAT32, mp3, portable audio hacks, soundcloud, TP4056 | Leave a comment

ESP32 Becomes Music Player In Under 40 Lines of Code

The demo code for [XTronical]’s ESP32-based SD card music player is not even 40 lines long, though it will also require a few economical parts before it all works. Nevertheless, making a microcontroller play MP3s (and other formats) from an SD card is considerably simpler today than it was years …read more

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Posted in amplifier, audio, class-d, demo, digital audio hacks, ESP32, I2S, Microcontrollers, mp3, pcm | Leave a comment

Turning A MicroKORG Into A MicroKORG S With This Speaker Mod

When [Michael Wessel] bought his MicroKORG synthesizer/vocoder, he felt less than amused when two years later the MicroKORG S was released, with the ‘S’ standing for ‘sound’, apparently, for the 2+1 speaker system that was added to it. Undeterred, [Michael] figured out that both synthesizers are similar enough that one …read more

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Posted in digital audio hacks, microkorg, musical hacks, synthesizer, vocoder | Leave a comment

How Did They Get Sampled Sounds From An SN76489 8-bit Sound Chip?

If you were lucky and had well-off parents in the early 1980s, your home computer had a sound chip on board and could make music. There were a variety of chips on the market that combined in some form the tone generators and noise sources of a synthesiser, but without …read more

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Posted in audio, BBC Micro, digital audio hacks, retrocomputing, SN76489 | Leave a comment

Pulling Data From News Feed Telemetry

We are used to seeing shots from TV news helicopters every day, they are part of the backdrop to life in the 21st century. But so often we hear them overlaid with studio commentary, so it’s interesting to hear that their raw audio contains telemetry. It caught the attention of …read more

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Posted in audio, digital audio hacks, gnu radio, telemetry | Leave a comment

Homebrew Binaural Microphone Lets You Listen Like a Human

We humans may not have superpowers, but the sensor suite we have is still pretty impressive. We have binocular vision that autofocuses and can detect a single photon, skin studded with sensors for touch, heat, and pain, and a sense of smell that can detect chemicals down to the parts …read more

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Posted in balanced, binaural, digital audio hacks, electret, microphone, phantom power, pro audio, rc, shield, xlr | Leave a comment

Drumming a Beat on a Hundred-Year-Old Typewriter

We have seen a fair share of unusual items being turned into musical instruments. Luckily, with a little bit of hacking it is possible to turn almost anything into a MIDI controller. [William Sun Petrus] just converted a 1920s typewriter into a drum machine and delivers a hell of a …read more

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Posted in digital audio hacks, drum machine, midi, musical hacks, typewriter | Leave a comment

Drumming a Beat on a Hundred-Year-Old Typewriter

We have seen a fair share of unusual items being turned into musical instruments. Luckily, with a little bit of hacking it is possible to turn almost anything into a MIDI controller. [William Sun Petrus] just converted a 1920s typewriter into a drum machine and delivers a hell of a …read more

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Posted in digital audio hacks, drum machine, midi, musical hacks, typewriter | Leave a comment

Ultrasonic Sound Gun Precisely Aims Your Music

When listening to music you sometimes cannot avoid the situation where other people get annoyed because they feel it disrupts their important doings or they do not share your taste in avant-garde doom metal. Of course one could just use headphones. But a hackier way would be to build a …read more

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Posted in digital audio hacks, directional speaker, portable audio hacks, sound gun, ultrasonic | Leave a comment

Sending IP Over Morse, Because Why Not?

Are you a ham radio operator? Have you ever felt the need to send IP over Morse? If you answered yes (or no) and don’t mind a few manual steps between converting network packets to and from and Morse code, [Folkert van Heusden]’s IP Over Morse project has you covered. …read more

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Posted in digital audio hacks, ham, internet hacks, morse, morse code, wireless | Leave a comment