structure updates

tech_docs/python/tone_generate.py

@@ -0,0 +1,46 @@
+from scipy.io.wavfile import write
+import numpy as np
+
+# Parameters
+sample_rate = 44100  # Sample rate in Hz
+duration = 16  # Total duration of the countdown in seconds
+base_frequency = 440  # Base frequency for the first beep in Hz
+final_frequency = 880  # Final frequency for the beep before the end tone in Hz
+end_tone_frequency = 1760  # Frequency for the final tone
+volume = 0.5  # Volume, from 0 to 1
+beep_duration = 0.3  # Duration of each beep in seconds
+beep_interval = 1  # Interval between beeps in seconds, decrease towards the end
+end_tone_duration = 1.5  # Duration of the final tone in seconds
+
+# Time array
+t = np.linspace(0, duration, int(sample_rate * duration), False)
+
+# Generate silent audio
+audio = np.zeros_like(t)
+
+# Generate beeps
+for i in range(int(duration / beep_interval)):
+    # Calculate beep frequency to increase over time
+    freq = np.linspace(base_frequency, final_frequency, int(duration / beep_interval))[i]
+    # Calculate start and end samples for the current beep
+    start_sample = int(i * beep_interval * sample_rate)
+    end_sample = int(start_sample + beep_duration * sample_rate)
+    # Generate beep
+    beep = np.sin(2 * np.pi * freq * t[start_sample:end_sample]) * volume
+    # Insert beep into the audio signal
+    audio[start_sample:end_sample] += beep
+
+# Generate the final tone
+start_sample = int(duration * sample_rate - end_tone_duration * sample_rate)
+end_sample = int(duration * sample_rate)
+end_tone = np.sin(2 * np.pi * end_tone_frequency * t[start_sample:end_sample]) * volume
+audio[start_sample:end_sample] += end_tone
+
+# Ensure audio is in 16-bit format
+audio = np.int16(audio / np.max(np.abs(audio)) * 32767)
+
+# Save to file
+wav_file = '/mnt/data/countdown_timer_tone.wav'
+write(wav_file, sample_rate, audio)
+
+wav_file