Patent ID: 8116466

Claim:
An apparatus for testing sound input and output of a sound card, applicable for detecting whether a sound leakage problem occurs in a sounding interface of a sound card in a personal computer (PC), wherein the sounding interface further comprises a first sound channel and a second sound channel, the testing apparatus comprising: a switching circuit, electrically connected to the sounding interface and a sound-receiving interface of the sound card respectively, and having a plurality of transmitting paths, wherein the switching circuit is used to receive the first sound channel and the second sound channel, and connect the first sound channel and the second sound channel to corresponding transmitting paths, so as to transmit an audio signal back to the sound-receiving interface; a test means, wherein the PC monitors a first testing audio signal transmitted via the first sound channel and/or a second testing audio signal transmitted via the second sound channel, and the PC examines whether the first sound channel has the second testing audio signal or whether the second sound channel has the first testing audio signal, so as to determine whether a sound leakage problem occurs between the first sound channel and the second sound channel; and a switching unit, electrically connected to the sounding interface and the switching circuit respectively, for receiving the first sound channel and the second sound channel, wherein the switching unit switches the transmitting paths in the switching circuit according to a first switching audio signal and/or a second switching audio signal.