David argues that an embedded open-architecture audio processor can hit the below 1 mW active power consumption mark.Typical audio transceivers now involve more sophisticated solutions, and demand for audio processors has never been higher. This stems partly from the popularity of convenient communication devices, such as mobile phones or even laptop computers using VoIP, and from the demand for clear communication free of echo and noise in all environments. Such communication quality is only possible thanks to the implementation of increasingly complex DSP algorithms that can improve audio performance under increasingly diverse and challenging conditions.
At the same time, design engineers have less freedom when it comes it to the amount of available system power and board space. As a result, the need to implement more complex digital audio processing solutions that consume less power and require less physical space is driving the development of audio processing techniques in general and embedded DSP-based solutions in particular. [Continue reading →]