Kenwood TS-590S manual DSP-based Auxiliary Circuits Common to TX/RX

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4 DSP

Figure 4-20 shows how the waveform changes when the speech processor is toggled between active and inactive.

You can see that when the speech processor is activated, the differences in amplitude are averaged and the talk power is increased.

The speech processor has two settings: HARD and SOFT.

HARD is a setting that you choose so as to increase talk power while tolerating some distortion and SOFT is a setting to minimize rasping distorted audio. Select either of the two settings according to your predilection and operational circumstances.

4.8 DSP-based Auxiliary Circuits (Common to TX/RX)

4.8.1 TX Equalizer & RX Equalizer (AF Processing)

If you use the RX equalizer (RX EQ), you can easily adjust RX audio quality. Pick your quality of choice from the preset curves: high boost, formant pass, bass boost, and flat.

Likewise, TX audio quality can be adjusted with the TX equalizer (TX EQ). It is easy to make changes to suit your taste of TX audio quality: for example, correcting microphone characteristics or applying compensation to match the characteristics of your own voice.

Also, on the TS-590S, with the ARCP-590 provided on the Kenwood Web page, you can adjust the settings in the 18-band graphic equalizer offered in its Audio Equalizer window (Figure 4-21). This function offers you more diverse options for equalizing.

Any adjustments made in the Audio Equalizer window of ARCP-590 are reflected in the TS-590S in real-time. Meanwhile, the equalization done while “User” is selected is stored on the TS-590S.

Typical graphic equalizers used in audio devices divide the spectrum into octave segments. In contrast, the equalizer on the TS-590S divides the spectrum into multiples of 300 Hz to allow the insertion of a notch at a particular frequency and precise reproduction of complex frequency analysis results.

Figure 4-21 ARCP-590 Audio Equalizer Window

TS-590S

CONTENTS

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Contents TS-590S Other Restrictions About CopyrightCopyright of this Manual and Software About Trademarks and Intellectual PropertiesContents Optional Accessory Product Planning Objectives Development Spirit Type of Conversion ReceptionReception Down Conversion Block diagram Down ConversionMCF Hints and Tips Comparison of Bandpass Characteristics of MCFs Measurement Conditions Dynamic Range in the 50 MHz Band Up ConversionRX Auxiliary Circuits CN101 CN102 CN103 FET Final Circuit TransmissionKenwood Traditional Transmitting Circuitry If CircuitsTransmission High-speed Relay-controlled Antenna Tuner Remote ConnectorMenu N o or N o 1 or DRV Terminal Transmission Output Characteristics of DRV Terminal at 136 kHz and 0 dBm Transmission Local Oscillator Comparison C/N CharacteristicsMultipurpose 32-bit Floating Point DSP DSPDSP Advanced AGC Control via if Digital ProcessingControl Block Diagram of IF-AGC Digital if Filter Interference Elimination Within AGC LoopLOW CUT Types of Digital if FiltersManual Notch Filter and Auto Notch Filter Digital Noise Blanker NB2 Demodulation Modulation DSP-based Auxiliary Circuits for RX Beat Cancel AF ProcessingNoise Blanker NB2 if Processing 11 NB2 Inactive Overview of Noise Reduction13 Conceptual Scheme of NR1 Based on Spectral Subtraction 4 NR1 Spectral Subtraction Method AF ProcessingAudio spectrum components swamped by noise 16 NR1 Line Enhancer Method Inactive 5 NR1 Based on a Line Enhancer AF Processing18 NR2 Inactive 6 NR2 AF ProcessingSpeech Processor AF Processing DSP-based Auxiliary Circuits for TXTX Equalizer & RX Equalizer AF Processing DSP-based Auxiliary Circuits Common to TX/RXExtended Data-mode Related Functions Software Enhancing Operating PleasureSoftware Enhancing Operating Pleasure Drive OutOperation in the 135 kHz Band Single Button Toggles if Filters between a and BPower-on Message Mode Selection of Built-in Electronic KeyerDouble Function Keys and Hold Time Selection Cross Tone Function Quick Memory FunctionPF Keys MIC CN Expansion of Voice Guide Function Optional VGS-1 Required Projections on the Rear Panel Easy Updating of FirmwareA Sketch of the TS-590S Cooling Structural FeaturesStructural Features Heat Sink Section Amber and Green LCDMain Control Knob Main Control KnobWindows Related Software System ConfigurationsControlling TS-590S from a PC using the COM Connector Expansive Application SoftwareConnection Controlling TS-590S from a PC using the USB ConnectorSoftware Hardware Controlling TS-590S from a PC on a Remote SiteUser Interfaces Basic Specifications Inherited from ARCP-480Menu Function KNS Kenwood Network Command SystemKNS Welcome Message Audio Equalizer Visual ScanARHP-590 Amateur Radio Host Program Freeware Basic Specifications Inherited from ARHP-10Disabling AF Gain Control from ARCP-590 New ARUA-10 USB Audio Controller FreewareBasic Functions SetupOperation Automatic Execution when Windows Starts Adjusting VolumeStarting and Stopping ARUA-10 12 Main Window of ARVP-10H New ARVP-10H Amateur Radio VoIP Program FreewareMaking ARVP-10H host station Online or Offline Setup of ARVP-10H Host StationConnecting and Disconnecting ARVP-10R Remote Station Setup of ARVP-10R remote station16 Device Manager New Virtual COM Port DriverPS-60 Regulated DC Power Supply Optional AccessoryComparing Rectification Waveforms Rectifier CircuitPage Revision 1.00 May 15
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