The Compact Disc introduced the first widely accepted digital audio format. It became popular partially because of improved audio quality. There were other reasons, too. Listening and accessing the audio was also far more convenient than the previous vinyl and cassette formats.
The Compact Disc has reigned as the dominant physical audio format since it was introduced to the public in 1982. Even in 2007, over 200 billion CDs were sold.
Of course, digital sound file delivery is overtaking physical optical disc shipments. However, the CD format set a fidelity standard that has lasted for over 30 years. In one way or another, this has affected every sound pro.
As sound professionals, we know how greatly higher fidelity sound affects our work. Higher sampling rates allow more flexibility in sound design. Higher bit rates increase dynamic, and, generally speaking, make sound clips appear more full, lush, and rich. But does high fidelity audio really matter to listeners?