Question
Would you explain the difference between FM and DM?
Answer
When we had our own Comfort Audio FM system years ago, we found out that we couldn’t get the quality we ultimately wanted because the dynamic range was not sufficient. With DM, we can get a much larger dynamic range, which makes the sound quality much better and improves intelligibility. Our compression ratio is also lower, and there is no noise at all in the transmission with a digital system. We also have a bandwidth out to 7,000 Hz. One important factor with all systems is as short of a transmission delay as possible. If you get a signal directly into your open ear and also through the amplified system that is delayed, it might sound like an echo or vibration. Our delay is only 0.3 milliseconds, which is better than other digital systems, and even better than Bluetooth, which is typically up to 40 milliseconds or more.
For more information about Comfort Audio, please visit www.comfortaudio.com/us or the Comfort Audio Expo Page on AudiologyOnline.