Patent ID: 9584896
Date: 2017-02-28
CPC Classifications: H03F,H03G,H04R

Claim:
1. An audio device comprising: a headphones, an external microphone, and a mixing circuit; wherein the audio device further comprises an integral external microphone; wherein the external microphone picks up an ambient noise external to a user; wherein the audio device mixes the ambient noise with a plurality of audio sources; wherein the mixing circuit has volume control; wherein the volume control independently sets the volume level of the ambient noise that is heard through the headphones; wherein the headphones comprise a first speaker, a second speaker, a first cable, and a first jack; wherein the mixing circuit receives an audio signal from the external microphone; wherein the mixing circuit amplifies the audio signal a selected volume level; wherein the volume level is selected using a volume control; wherein the plurality of audio sources further comprises a first audio source; wherein the mixing circuit mixes the ambient noise audio source with the first channel audio source and announces the resulting mixed sources through the first speaker; wherein the plurality of audio sources further comprises a second audio source; wherein the mixing circuit mixes the ambient noise audio source with the second channel audio source and announces the resulting mixed sources through the second speaker; wherein the mixing circuit further comprises an input circuit, a first channel, and a second channel; wherein the input circuit generates the ambient noise audio source; wherein the first channel mixes the ambient noise audio source with the first channel audio source and announces the resulting mixed sources through the first speaker; wherein the second channel mixes the ambient noise audio source with the second channel audio source and announces the resulting mixed sources through the second speaker; wherein the input circuit further comprises a first resistor, a second resistor, and a first amplifier; wherein the second resistor is a variable resistor; wherein the first amplifier, the first resistor and the second resistor are configured as an inverting amplifier with variable gain.