A type of hearing aid which uses digital signal processing (DSP) which turns the incoming sound into varying voltages, or digital code in real time. This code is processed mathematically with a high-speech processor according to instructions written to the chip. This allows for advanced processing of incoming sounds for the hearing aid wearer.
Digital hearing aids have replaced the older analog type hearing aids and make up 90% of the hearing aids sold in the United States today. Digital hearing aids have the potential of tailoring a device with the use of software (programming) to meet the individual needs of the wearer.