| 摘要 |
A portable audio device with microphone and controller includes a generally portable housing; an aperture in the housing having sides sloped between 15 and 45 degrees relative to a central axis of the aperture with a large end that opens out of the housing and a small end that opens into the housing; a microphone inside the housing, in line with the aperture, so that sound enters the device and passes to the microphone; an audio output that provides an audio signal representing the sound; a meter on the housing that displays an input level for the microphone and an output level for the audio output; and a controller that controls the input level and the output level. An elastomer dampener for the microphone resists vibrations. Other inputs include an external connection for a musical instrument, second microphone or other input with a 48-volt power source.
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