Here are some outstanding posters I found at AllPosters.com. You'll find some posters for piano, guitar, bass guitar, saxophone, an excellent one on MIDI and some really nifty posters dealing with historical symphonic instrumentation and a chart of classical music composers. Some excellent stuff to hang on your studio walls! Enjoy!
The range of frequencies which can be experienced by an average human being. The range is defined as 20 Hz to 20 kHz for convenience but in practice, is realistically closer to 20 Hz to 17 kHz. Dolphins are believed to hear up to 70 kHz.