app.py

#write a gradio app that will turn humming into a musical note file that can be used as an input to a midi generator
import gradio as gr
import numpy as np
import librosa as lr
import mido
from io import BytesIO

def humming_to_midi(humming_input):
    # Load the humming audio file
    if isinstance(humming_input, str):
        humming_input = BytesIO(humming_input.encode())
    wav, sr = lr.load(humming_input, sr=44100)

    # Extract the pitch of the audio
    pitches, magnitudes = lr.piptrack(wav, sr=sr)

    # Convert pitches to MIDI note numbers
    midi_notes = lr.hz_to_midi(pitches)

    # Create a MIDI file using the extracted notes
    midi_file = mido.MidiFile()
    track = mido.MidiTrack()
    midi_file.tracks.append(track)

    # Set tempo to 120 beats per minute
    track.append(mido.MetaMessage('set_tempo', tempo=mido.bpm2tempo(120)))

    # Convert note numbers to MIDI events and add them to the MIDI track
    for midi_note in midi_notes:
        note_on = mido.Message('note_on', note=int(round(midi_note)), velocity=64, time=0)
        note_off = mido.Message('note_off', note=int(round(midi_note)), velocity=0, time=100)
        track.append(note_on)
        track.append(note_off)

    # Save the MIDI file
    output_file = 'humming.midi'
    midi_file.save(output_file)

    return output_file

# Create an input interface for the microphone recording
microphone_input = gr.inputs.Audio(source="microphone", label="Record your humming", type="filepath")

# Create the Gradio interface
gr.Interface(humming_to_midi, microphone_input, "label", description="description").launch(debug=True)