Alternatives
Products that do what Building Electret Mic Preamp Open sourced does
I designed and built a studio-quality electret microphone preamp focused on low noise, high gain, and clean audio capture using easily available components. This is an original design — it does not follow TI, Analog Devices, or other common application schematics. The circuit was tested and verified in LTspice before building. All schematics, design rationale, and build instructions are open-sourced for anyone to replicate or improve. Here's a short demo of the audio performance: https://youtu.be/RZR_PrxcBBU?si=9gN_5yx09bwNFjba I spent over a month researching, simulating, and…
- 1IJ
Hey all. For the last few years, I have been developing a software synthesizer as a side project. It's taken longer than I both hoped and feared, but earlier this week I finally shipped 1.0. Details about the synth itself are up on my website, https://lhiaudio.com/. For those who are unfamiliar, in music production, there are host applications (such as Logic Pro, Ableton Live, or REAPER) in which most of the work (such as recording or sequencing MIDI data) is done. These applications generally have some built-in tools for the actual generation and processing of audio data, but…
2018
- 2
- 3
AI-generated samples and effects for producers (FREE VST)
2024
- 4
- 5BA
I am a product designer by profession, and recently, I ventured into coding and started developing applications. Today, I'm excited to share a project I've been passionately working on. The concept is a voice-activated journal: just voice-record your thoughts, and the app will transcribe them into text. I built this to help those like me who struggle to build a journaling habit. Also has features that encourage habbit building like a streak/tracker and a threshold marker encouraging you to record a minimum amount. I used OpneAI Whisper to power the transcriptions which means you can…
2023 · main.d35lo6kdqvpjht.amplifyapp.com
- 6IB
Hey HN! I built Transcrib.ee to help me generate transcripts for lectures on YouTube with no captions, especially multilingual lectures. I was constantly frustrated with videos that had no transcripts or inaccurate ones, so I built a tool and decided to share it with everyone. This tool uses Groq (an AI inference engine that's different from Grok and offers very fast processing) and OpenAI's Whisper model (really accurate in multilingual) to quickly transcribe any YouTube video, regardless of the language. It's been a game-changer for my studies! To make it even faster, I created a Chrome…
2024 · transcrib.ee
- 7PA
Hey everyone, I've built a multiplayer audio recorder/looper for songwriting in your browser. It started as a side project in March last year but 3 months ago I quit my job to work on it full-time. I wanted the simplicity of a Portastudio and the utility of a loop station to serve as an easy way to get song ideas together without needing to send files back and forth, or get lost in the complexity of traditional DAWs up front - just record or upload your ideas and share the link with whoever you want to collaborate with. Would love to hear what you think of it! Any feedback, thoughts, or…
2023 · prototape.fm
- 8PP
Write up of an embedded project I made to control my analogue synthesizer. Happy to answer any questions or provide any further details of this project if wanted.
2024 · doug.lon.dev
- 9S1
I built a beautiful teleprompter to help you sound more confident on cold calls or videos. I Recently had the experience of recording a quick demo for one of my products, and i was taking 3 second long pauses and blanking when the record button hit. I found that a lot of other teleprompters on the market were just too complex or had terrible UI/UX and didn't really allow navigation abilities. I recorded the video on my landing page using my own product and when i say this is "the most confident i have ever sounded" I mean it lol. Check it out and let me know if you guys have any…
2024 · magicscript.vercel.app
- 10IB
Hey HN, I built Presync.io to simplify plugin management for music producers on macOS. Presync lets you easily discover, install, and manage music production plugins. Read it as "Steam for music production software". What it has now: - One-Click Installation - 110+ Free Plugins - Video Reviews and Tutorials for plugins (in progress) - Management Stuff: delete for any plugin in your system, MVP of updates (very early stage) Backstory: I love music production and development. This past spring, I started Presync to move away from the endless methods of reading/writing PDFs and Excel files.…
2024 · presync.io
- 11IB
Hey HN! Last week I was working on a website and needed a way to synchronise visuals with live music. I've used MIDI controllers for this before, but I am travelling right now and don't have mine with me. So I had the crazy idea to build a browser extension that uses the keyboard as input and includes a sequencer. I gave myself 24 to work on it. It ended up taking longer (of course), specially since I ended up creating a demo, a small landing, docs, and an intro video. Took me one week from idea to launch (pushed quite a bit tbh). Features: - Works as a browser extension. Atm distributed…
2024 · minitap.io
- 12AA
Hey y'all, So - the main idea of this is to make a WebAudio synthesis/sequencer tool which humans can use via the UI, but where the big unlock is for agents to drive with MCP It's semi decent as "make a groovy jazz track", especially for retro sounds - but the real use case is more like "make a jetpack whoosh effect I can control via code at runtime - where the sound changes based on character health or how much fuel is left" In other words, the target audience is not musicians (except maybe of the Max/MSP sort), but more like creative coders who want to shape the sound iteratively…
Jun 2026 · audio.awsm.fun
- 13BP
I've been building hi-fi stereo setups for years with all sorts different budgets, different rooms, helping friends spec out systems. I even worked at a hi-fi shop for several months before I came scurrying back to tech (a good story, but, uh, out of scope here). I kept wishing for something like PCPartPicker.com but for stereo gear. A place to design and save my systems, check compatibility, and see exactly how everything works. So I built it. No sign-in required to create builds: just hit "Start Your Build" and add parts. The signal chain diagram updates in real-time as you build and you…
Mar 2026 · buildhifi.com
- 14A1
This toy retro synth installs and runs on esp32-s3 or p4 as an ELF file under BreezyBox firmware. It uses my work-in-progress immediate mode TUI library in C. Web-based version via emscripten: https://mini000.itch.io/beeper Source code: https://github.com/valdanylchuk/beeper Demo video running on Tanmatsu (esp32-p4): https://www.youtube.com/watch?v=uCH9XYZ7QB0 The main challenge I was going for was actually to find a nice minimal set of controls for a subtractive synth. Usually there are 40-50 of them in "simple" synths; I ended up with 16.…
Jul 2026 · mini000.itch.io
- 15OS
I built Whispering because I believe transcription is too fundamental a tool to be locked behind paywalls. It's a cross-platform desktop and web transcription app that turns speech into text with a keyboard shortcut, among other things. The app lets you bring your own API key (OpenAI, Groq, etc.) and make direct calls. If you want complete privacy, it also supports local transcription. Either way, your audio never goes through any middleman servers. It's super lightweight (~22MB), built with Svelte 5 and Tauri, and works on Mac, Windows, and Linux. I've been using it daily for the past few…
2025 · github.com
- 16EA
Hi HN, I built EEGFrontier, a compact open-source EEG acquisition board based on the ADS1299 and an RP2040. The goal was to design a low-cost board that works with dry electrodes while exposing the full EEG signal chain — no abstractions, no closed firmware. What surprised me most during this project were the practical issues that datasheets don’t really prepare you for: grounding (REF/BIAS), noise coupling from digital lines, routing constraints, and how small layout decisions drastically affect signal quality. The repository includes full KiCad files, firmware, a BOM with cost…
Feb 2026 · github.com
- 17MO
2017 · creativeintent.co
- 1801
Hey HN! I've been working on a side project to create an audio transcription API based on the OpenAI whisper model. Sign up link: https://whisperapi.com I tried to make the API really easy to use and get setup with. Also, because the Whisper model is so good, turns out I can offer the service for about 75% cheaper than what seems like the industry average. I'm always looking to make improvements, so would appreciate any feedback anyone has!
2022 · whisperapi.com
- 19IM
Hey everyone, I built a Sonic Pi MCP to create music with just prompts and jam with Claude I've linked a demo of me asking Claude for a rock beat, and then for some D minor chords that sound like Pink Floyd Let me know what you think!
2025 · twitter.com
- 20IV
Hi - I'm part composer, part engineer and big fan of reading blogs where people learn out loud or with the garage door up by sharing their notebooks or journals. I've been doing this in Moleskines for years (going back to the 80s) but made it a new year's in 2024 resolution to post SOMETHING everyday, so long as I created the sound. I have a big archive of demos and seeds of ideas, so I figured it wouldn't hurt to do something with those in the process. Being so steeped in programming for the last 30 years, a healty chunk of this material is made via coding with Csound, TidalCycles, some raw…
2025 · listenfaster.com
- 21CA
I built Claudio to solve a simple problem: typing is slow when you have complex thoughts to share with Claude. This Chrome extension adds a microphone button to Claude.ai that uses OpenAI Whisper for transcription. Key features: - One-click voice recording with intelligent progress tracking - Audio file upload support (perfect for mobile voice notes → desktop Claude workflow) - Speed control (1-2x compression) to reduce API costs - Private and secure - your OpenAI API key stays local - Real-time transcription stats and performance analytics Latest v1.2.1 fixes: - Improved audio duration…
2025 · earthpilot.ai
- 22IM
Hello all, I made a small transcription app for your Mac based on OpenAI’s Whisper. Would love some feedback. My plan is to make it easy to load weights from any fine-tuned whisper model to enable specialized dictation for any subfield. It’s still early in development. Thanks!
2023 · twitter.com
- 23AV
I built a free and open-source, high-resolution, real-time audio visualizer on the web. Try it out here: https://audiovisualizer.org The main feature is a very high resolution frequency domain visualizer. It even works in realtime with the microphone. The application also features a synthesizer that can be played with the keyboard or MIDI files and allows for adjustable harmonics and ADSR envelopes. I used React.JS as the framework, P5.JS for rendering the visualizations, the WebAudio API for audio analysis, Meyda.JS and Essentia.JS for feature extraction, Tone.JS for synthesis,…
2025 · audiovisualizer.org
- 24IL
The MIDI controller I wanted didn't exist, so I built it. I: - posted it to reddit, got 50k views, sold a few (including to some big names in the EDM world) - used it in a session with a Wu Tang affiliate (got paid 30 chicken wings, all flats) - got banned from Instagram in 48 hours, right after one of my favorite producers followed my account. Build Details: - 2.0mm 5052 powder coated aluminum body, modeled in fusion, laser cut and bent by sendcutsend - Solid walnut endcaps - SLA keycaps - gateron switches - custom switch matrix pcb - custom c++ firmware - rp2350 mcu - i2c oled display -…
Feb 2026
Ranked by how close each launch is in meaning, then by votes. Refine with a description →