विचारों
SoundCard Scope - Spectrum analysis
SoundCard Scope - Beat frequencies
How to 'scope any audio source in OSX (for free)
#413 Your PC Soundcard is an Oscilloscope, a Signal Generator, and a Spectrum Analyzer (Arta, REW)
Audio Kit - Spectrum Analyser, Scope, SPL Meter, Signal Generator for iPhone, iPad
Sound Scope Space on iPad
Understanding Application Scope in Spring: Key Concepts and Best Practices
Return of the Tri-Scope but it's Different? (Vinidoz Synth Demo 4)