Mobile communication terminal with equalizer function
Disclosed is a mobile communication terminal which is provided with an equalizer function of audio equipment to adjust a timbre of transmitting/received speech sounds so as to satisfy a great number of users having various individualities and tastes simultaneously. The mobile communication terminal according to the present invention includes an equalizer connected to a CODEC, a speaker and a microphone for adjusting a timbre of an analog speech signal inputted thereto from the CODEC and/or a speech signal inputted thereto through the microphone, and an equalizer control circuit for controlling a timbre control operation of the equalizer according to a control signal of a CPU.
1. A mobile terminal for use in a wireless communication, comprising:
a microphone to receive speech signals;
a speaker to provide audio signals;
an antenna to receive/transmit signals;
an input device to receive user interface to control equalizer frequency of the audio signals output to the speaker of the mobile terminal;
an equalizer configured to adjust a signal to provide equalized signal to the speaker;
a converting device to convert a digital signal received through the antenna into an analog signal;
an equalizer controller adapted to supply a timbre control signal; and
a processor adapted to supply a first control signal corresponding to a frequency band set by a user to the equalizer controller, the equalizer controller to supply the timbre control signal to the equalizer based on the first control signal, the processor further adapted to provide a second control signal to the converting device, and the processor to supply a digital speech signal received from another mobile communication terminal to the converting device.
2. The mobile terminal of claim 1 , wherein the equalizer comprises a plurality of active filters.
3. The mobile terminal of claim 1 , wherein the converting device comprises a coder and decoder device.
4. The mobile terminal of claim 1 , wherein the timbre control signal adjusts the frequency band of the analog signal input to the equalizer according to the control signal.
5. The mobile terminal of claim 1 , wherein the microphone provides an analog signal.
6. The mobile terminal of claim 5 , wherein the equalizer adjusts the analog signal from the microphone and the converting device converts the adjusted analog signal into a digital signal.
7. A mobile terminal for use in a wireless communication, comprising:
a microphone to receive speech signals;
a speaker to provide audio signals;
an antenna to receive/transmit signals;
an input device to receive user interface to control equalizer frequency of the audio signals output to the speaker of the mobile terminal;
a codec configured to decode a coded signal to a decoded signal;
an equalizer unit configured to adjust the decoded signal received from the codec to provide equalized signal to the speaker; and
a processor adapted to supply a first control signal corresponding to a frequency band set by a user to an equalizer controller, the equalizer controller being controlled in response to the first control signal, the processor further adapted to provide a second control signal to the codec, and the processor to supply a digital speech signal received from another mobile communication terminal to the codec.
8. The mobile terminal of claim 7 , wherein the equalizer unit comprises a plurality of active filters.
9. The mobile terminal of claim 7 , wherein the codec comprises a coder and decoder device.
10. The mobile terminal of claim 7 , wherein the microphone provides an analog signal.
11. The mobile terminal of claim 10 , wherein the equalizer unit adjusts the analog signal from the microphone and the codec converts the adjusted analog signal into a digital signal.
12. A mobile communication terminal, comprising:
a speaker;
a microphone;
a codec adapted to convert a digital speech signal into an analog speech signal;
an equalizer configured to adjust a signal to provide equalized signal to the speaker;
an equalizer controller adapted to supply a timbre control signal; and
a CPU adapted to supply a first control signal corresponding to a frequency band set by a user to the equalizer controller, the equalizer control circuit to supply the timbre control signal to the equalizer based on the first control signal, the CPU further adapted to provide a second control signal to the codec, and the CPU to supply a digital speech signal received from another mobile communication terminal to the codec.
13. A mobile communication terminal, comprising:
a microphone adapted to input a transmitting speech signal;
a speaker adapted to reproduce a received speech signal;
a codec adapted to perform an analog-digital conversion for the transmitting speech signal and a digital-analog conversion for the received speech signal;
a CPU adapted to generate a first control signal according to a frequency band set by a user and to provide a second control signal to the codec;
an equalizer controller adapted to generate a timbre control signal according to the first control signal of the CPU; and
an equalizer adapted to adjust a signal received from the equalizer controller to provide equalized to the speaker, the equalizer being connected to the microphone, the speaker and the codec in such a fashion that the equalizer is disposed between the microphone/speaker and the codec.