MAZTR: Free Online Audio Frequency Viewer
![MAZTR: Free Online Audio Frequency Viewer](https://www.maztr.com/images/tools/audiofrequencyviewer.png)
![](https://www.checkhearing.org/images/plotspectrum.png)
Free Online Audio Plot Spectrum
Sound Spectrum Analyzer - Apps on Google Play
Sound Spectrum Analyzer - Apps on Google Play
![](https://www.researchgate.net/publication/320259279/figure/fig2/AS:667605413142541@1536180942567/Color-online-Spectrogram-oscillogram-and-power-spectrum-of-the-flight-call-of.png)
Spectrogram Online - Colaboratory
![](https://i.ytimg.com/vi/hxt3sDYMLl4/mqdefault.jpg)
MAZTR: Instant Online Audio Mastering
![](https://www.maztr.com/images/mic_headphones.jpg)
MAZTR: Free Audio Resources
Master Your Music Online for Free: Top Tools for Audio Mastering
Sound Spectrum Analyzer - Apps on Google Play
![](https://i.ytimg.com/vi/AQJEYeVR_ME/hq720.jpg?sqp=-oaymwEhCK4FEIIDSFryq4qpAxMIARUAAAAAGAElAADIQj0AgKJD&rs=AOn4CLCZxMR4Sbq2roCFBFc0YomDczNfQA)
Audio Geekery!, FREE Audio Analyzer! Dual FFT RTA, Open Sound Meter OSM
![](https://is1-ssl.mzstatic.com/image/thumb/Purple128/v4/e7/72/9e/e7729eda-bca7-6c35-d7f5-a908712eb9e1/AppIcon-1-1x_U007emarketing-85-220-6.png/1200x630wa.png)
Frequency Meter PRO on the App Store
![](https://www.maztr.com/images/blog/application-of-sound-post-production-in-different-entertainment-fields-3.jpg)
MAZTR: Application Of Sound Post-Production In Different Entertainment Fields - Audio Mixing and Mastering Blog
![](https://soundcmd.com/wp-content/uploads/2022/05/tone-generator-free-thumb-1024x768.jpg)
Free Online Sound Editor and Spectrum Player - Sound CMD
![](https://static.wixstatic.com/media/0508f3_e83ffd6961ae434193bc2818af4a5613~mv2.jpg/v1/fill/w_520,h_908,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/Let's%20Unmix.jpg)
Let's Unmix mono2stereo