Audio Narrowband Filter vs Tonic Notes

This app implements an audio filter around any selected pitch from C2 to C8. The sound from the microphone is filtered according to parameters set by the user and played back to the user, preferably over a headset. The app features a selectable filter bandwidth from 400 cents to 30 cents. The purpose of this filter is to help in training aural piano tuners. When playing an interval, the aural tuner needs to be able to focus on a coincident partial of the two notes to assess the beat rate at that partial. If this filter is set to isolate that coincident partial then the job of picking out the desired pitch is easier. Once the user has learned to focus on coincident partials this filter will not be necessary. This is a training tool, not a tool for everyday use. In addition to the filtering function this app also provides a synthesizer function that synthesizes a pure tone beating at a user-specified rate. The purpose of this synthesizer is for training aural piano tuners to recognize beat rates. The synthesized beat rates can be set from 1/10 beat per second to 30 beats per second. The beat rates of these "rapidly beating intervals" are especially difficult to assess when they are too fast to count. By listening to a synthesized beat at a specified beat rate the user can develop a sense of recognizing that beat rate in an interval played on the piano.

Get more out of your lessons and never forget a thing your teacher said. Tonic Notes records your music lesson, transcribes and summarizes it for you with clips of your own playing. The whole lesson sticks with you long after it's done. Get:

 **Unlimited transcriptions and intelligent summaries** Every word and note of your lesson, captured, with summaries to help you remember what to work on next. 

 **Clips of your playing, identified and highlighted** Music highlighted as audio clips with easy, organized playback. Replay a passage that needs work — or hear how far you've come. **Practice tracking and plans designed just for you**
 A bespoke plan drawn from your lesson. Set goals and track each session to see your stats over time. 

 **Metronome and tuner built in** No more switching apps. Tune your instrument, set your tempo, and play all in one place. **Teachers, students, parents — all in the loop** Include those who matter in your journey. Ask questions, share progress, and celebrate milestones together. 
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