Time Variation in Sounds

Amplitude envelopes: rapid rise and slow falls give a struck or plucked sound.

Vibrato:

• Voice: Maria Callas: Casta diva (1:20) Click to listen
• instruments usually have vibrato/tremelo due to coupling of human performer.
• Violin: Click to Listen (start at 25s)

• Leslie speaker: Click to listen

• Vibrato in theremin: Click to listen

The wah-wah effect:

• similar to vibrato, except it is higher resonances are gliding periodically.
• Trumpet (different mutes): Click to listen
• Miles Davis uses a wah-wah pedal (check out 1:00): Click to listen
• Bon Jovi, Livin' on a prayer (talk box): Click to listen

Yodeling:

• exagerated breaks between chest and head registers
• Click to listen
• Click to listen--Franzl Lang