Используйте приложение APKPure
Историческую версию Spectrum Analyzer, Sound Recorder можно получить на Android
Визуализация спектра в реальном времени, запись звука и голоса в высоком качестве
This is a simple but powerful sound recording app, with a realtime Spectrum visualization. It is 100% free and has no functional limitations.
Features:
• 200 bands Spectrum Visualization. It can be displayed in real time during recording or playback of audio files.
• Record audio with extremely high quality and support lossless audio recording.
• Support recording in the background or when the screen is off
• Support audio playback (supported formats: WAV, FLAC, AAC, M4A, MP3)