app.py

import numpy as np
import gradio as gr

def generate_tone(note, octave, duration):
    sampling_rate = 48000

    a4_freq, tones_from_a4 = 440, 12 * (octave - 4) + (note - 9)
    frequency = a4_freq * 2 ** (tones_from_a4 / 12)
    audio = np.linspace(0, int(duration), int(duration) * sampling_rate)
    audio = (20000 * np.sin(audio * (2 * np.pi * frequency))).astype(np.int16)
    return sampling_rate, audio

gr.Interface(
    generate_tone,
    [
        gr.Dropdown(["C", "C#", "D", "D#", "E", "F", "F#", "G", "G#", "A", "A#", "B"], type="index"),
        gr.Slider(4, 6, step=1),
        gr.Number(value=1, label="Duration in seconds"),

    ],
    "audio",
    title="Example from HF Video: Generate a Musical Tone"
).launch()