Wearable computer system and modes of operating the system

A wearable computer system comprising:

• an audio receiver, wearable by a user, that receives audio signals from the user and produces a corresponding electrical signal;
• and
• a computer unit that comprises:
• circuitry that receives and digitizes the electrical signal corresponding to the received audio signal;
• a processor;
• and
• computer memory having instructions stored thereon that, when executed by the processor, perform the following operations:
• processes the digitized signals and recognizes spoken words therein;
• determines whether the recognized spoken words constitute a predetermined natural voice command that blends with the natural phrases and terminology commonly spoken by the user;
• and
• responds to the predetermined natural voice commands from the user by prompting the processor to execute a predetermined function.

A wearable computer system comprising:

• a computer unit wearable by a user;
• and
• first and second audio receivers each wearable by the user and connectable to the computer unit such that the first audio receiver receives voice signals from the user and provides the voice signals to the computer unit for processing, and the second audio receiver receives ambient audio signals from the user's surroundings and provides the ambient audio signals to the computer unit for processing;
• the computer unit further comprising:
• a scrolling buffer in which ambient audio information received during a preceding predetermined period of time is stored;
• memory;
• and
• circuitry that, upon receiving a predetermined voice command from the user, stores in the memory audio information present in the buffer for some period of time in relation to the time the voice command was received, so that the audio information stored in memory may be retrieved at a later time.