Karaoke device with built-in microphone and microphone therefor

• US 20040094018A1
• Filed: 06/26/2003
• Published: 05/20/2004
• Est. Priority Date: 08/23/2000
• Status: Active Grant

• Current Assignee: SSD Co. Ltd.
• Original Assignee: SSD Co. Ltd.
• Inventors: Ueshima, Hiromu, Tanaka, Kunihiro
• Granted Patent: US 6,851,952 B2
• Time in Patent Office: Days
• US Class Current: 84/610
• CPC Class Codes: G10H 1/361 Recording/reproducing of accompaniment for use with an external source, e.g. karaoke systems
• CPC Class Codes: G10H 2220/211 for microphones, i.e. control of musical parameters either directly from microphone signals or by physically associated peripherals, e.g. karaoke control switches or rhythm sensing accelerometer within the microphone casing
• CPC Class Codes: H04R 3/00 Circuits for transducers , loudspeakers or microphones

Abstract

A karaoke device with built-in microphone includes a main body microphone, and converts an audio signal from the microphone into audio data by an A/D converter, and writes the audio data into a ring buffer by mixing with the data already stored in the ring buffer. If an echo mode is set, a delay time constant (C_D) corresponding to the echo mode is determined, and on the basis thereof, a size of the ring buffer is set. The data is read from the ring buffer, and is inputted in a sound channel. If a voice effect mode is set, a reproduction frequency constant (C_F) corresponding to the voice effect mode is determined, and based thereon, an inclement value of a read pointer of the ring buffer is determined, and then, the data is read from an address indicated by the read pointer. When the read pointer reaches the delay time constant, the relevant constant is subtracted from the read pointer value. Furthermore, it becomes possible to simultaneously use a microphone of an additional microphone and the main body microphone by inserting a microphone plug of the additional microphone into a microphone jack of the karaoke device.

Claims

1. A karaoke device with built-in microphone, comprising:

a body having a microphone;

an A/D converting means which is provided in the body and converts inputted voices from said microphone into audio data;

an audio data processing means which is provided in the body and receives the audio data from the A/D converter and processes the audio data to output processed audio data; and

an audio signal outputting means which is provided in the body and outputs an audio signal on the basis of the processed audio data.

2. A karaoke device with built-in microphone according to claim 1, wherein the audio data processing means includes a ring buffer for storing the audio data from the A/D converting means;

a writing means for writing the audio data into the ring buffer; and

a reading means for reading the audio data from the ring buffer.

3. A karaoke device with built-in microphone according to claim 2, further comprising an echo mode setting key provided on the body to set an echo mode, wherein the writing means includes a first setting means to set a size of the ring buffer in response to the echo mode.

4. A karaoke device with built-in microphone according to claim 2 or 3, further comprising a voice effect mode setting key provided on the body to set a voice effect mode, wherein the reading means includes a second setting means to set a ring buffer read pointer in response to said voice effect mode.

5. A karaoke microphone provided with a microphone, a microphone jack and a microphone plug,

wherein said microphone jack includes,

a first jack terminal,

a second jack terminal, and

a third jack terminal, and

said microphone plug includes,

a first plug terminal,

a second plug terminal, and

a third plug terminal, wherein

both the second jack terminal and the second plug terminal are connected to an audio signal line for outputting an audio signal from the microphone, and both the third jack terminal and the third plug terminal are connected to a ground line.

6. A karaoke microphone according to claim 5, wherein the audio signal line includes a mixer for mixing the two audio signals.

7. A karaoke microphone according to claim 5 or 6, further comprising a power supply line which applies a microphone power by connecting the first jack terminal and the first plug terminal.

8. A karaoke microphone according to any of claims 5 to 7, further comprising a terminating resistor which is provided in association with the second jack terminal in such a manner as to be opened if a microphone plug of another karaoke microphone is inserted into a microphone jack.