to record audio and then to playback with AudioRecord, AudioTrack.trouble

i made a audio-recording in real-time and then playback, but when i get started it sounded very noisy sounds and my voice. so i want to get my voice only with clean tone

im implementing this app with reverb, bass boost, equalizer and visualizer effects

i just wanna clean sounds without those effects

Q : how do i have to modify this substantial code part? (for audioRecord.startRecording, audioTrack.record, audioTrack.write)

here is my code snippet as below :

////////////////////////////////////

private void main() {

        for (;;) {

            Log.d("AFX", "Starting audio thread");
            this.audioRecord.startRecording();
            this.audioTrack.play();

            int i;

            if (!this.running) {
                this.audioRecord.stop();
                this.audioTrack.stop();
                this.audioRecord.release();
                return;
            }

            i = this.audioRecord.read(this.buffer, 0, this.chunkSize);
            Log.v("AudioRecord", "read " + this.chunkSize + "bytes");

            try {

                // Log.d("AFX", "Starting audio thread");
                this.audioRecord.startRecording();
                this.audioTrack.play();
                Log.d("AFX", "Starting audio thread");

                boolean flag = this.running; // df value : false

                if (!flag) {
                    this.audioRecord.stop();
                    this.audioTrack.stop();
                    // this.audioRecord.release(); // added
                    // this.audioTrack.release(); // added
                    Log.d("AFX", "Exiting audio thread");
                    return;
                }

                i = this.audioRecord.read(this.buffer, 0, this.chunkSize);
                Log.v("AudioRecord", "read " + this.chunkSize + "bytes");

                if (i < 0) {
                    Log.e("AFX", "Record error: " + i);
                    this.running = false;
                    continue;
                    // break;
                }
                if (!this.running) {
                    continue;
                    // break;
                }

            } finally {
                this.audioRecord.stop();
                // this.audioRecord.release(); // added
                this.audioTrack.stop();
                // this.audioTrack.release(); // added
            }

            this.audioTrack.write(this.buffer, 0, i);
            // Log.d("AFX", "Starting audio thread");
            // this.audioRecord.startRecording();
            // this.audioTrack.play();
        }
    }

any idea'll be appreciated

thank you much