Audio Waveform Generator
Generate high-quality waveform images from audio files.
Perfect for podcasts, video editing, and social media.
Upload Audio File
Select or drag & drop your audio file
MP3, WAV, OGG, M4A, FLAC
Waveform Preview
About
A tool that automatically generates visual waveform images (Waveform/Audio Spectrum) from audio files such as music, voice, narration, etc. (MP3, WAV, AAC, FLAC, etc.).
You can choose from three styles: "Bars," "Line," and "Mirror" to suit your design taste, and the colors of the waveform and background can also be freely customized. Very useful as a background image for audio content distribution on YouTube etc.
Since analysis and drawing are performed on the browser using the Web Audio API, even large audio files of several tens of minutes can be converted into images in an instant, and the files are not uploaded to the server.
How to Use
Select audio file
Load audio files such as MP3 and WAV formats by dragging and dropping. The analysis is finished in an instant.
Adjust design
Change the waveform display style (Bars/Line/Mirror) and choose the waveform color and background color according to your preference.
Save as PNG
When you press the "Save" button, it will be downloaded as a high-quality PNG image with a transparent background.
Use Cases
Podcast promotional video (Audiogram)
This tool generates waveform images from radio and podcast sound sources, and overlays them on video editing software to create announcement videos for SNS.
Publishing your own music (DTM)
When publishing original songs on SoundCloud or YouTube, place a waveform image as an accent on the cover art.
Glossary
- Waveform
- A visual representation of sound amplitude over time. The horizontal axis represents time and the vertical axis represents amplitude.
- Sine Wave
- The most fundamental waveform containing only a single frequency (pure tone). It produces a smooth, round sound without any harmonics.
- Square Wave
- A waveform composed of the fundamental frequency and odd harmonics only. It produces the distinctive "8-bit" or "chiptune" sound.
- Sawtooth Wave
- A waveform containing all integer harmonics. Known for its bright, buzzy tone, it is widely used as a basis for synthesizer lead and pad sounds.
- Triangle Wave
- A soft waveform similar to a sine wave but containing odd harmonics at reduced amplitudes. It produces a mellow, flute-like tone.
- Web Audio API
- A JavaScript API for advanced audio processing in the browser. It enables creating oscillators, effects chains, and audio analysis nodes.
- Frequency (Hz)
- The number of wave cycles per second, measured in Hertz. Human hearing ranges from about 20 Hz to 20,000 Hz. 440 Hz corresponds to the note A4.
FAQ
- Q.Can I use the generated audio commercially?
- Yes. All waveforms and audio generated by this tool are royalty-free and can be used for video production, sound effects, educational materials, etc.
- Q.Does it play sound on smartphones?
- Yes. It works on major iOS and Android browsers. On iOS Safari, you may need to turn off silent mode first.
- Q.What is the maximum frequency I can generate?
- The Web Audio API supports up to half the sample rate (typically 22,050 Hz for 44.1 kHz). Frequencies above ~20,000 Hz are inaudible to humans.
- Q.Can I download the waveform as a file?
- Yes. You can download the generated audio as WAV or MP3 format with configurable bitrate and duration.
- Q.Can I play multiple waveforms simultaneously?
- Yes. Multiple OscillatorNodes can run simultaneously, allowing you to create chords and complex timbres.