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angle modulation
angle modulation

Op-Amp
Op-Amp

Datasheet
Datasheet

... The circuit board used in the application should use RF circuit design techniques. Signal lines should have 50 Ohm impedance while the package ground leads and exposed paddle should be connected directly to the ground plane similar to that shown. A sufficient number of via holes should be used to co ...
ICS1561A Differential Output PLL Clock Generator Integrated Circuit
ICS1561A Differential Output PLL Clock Generator Integrated Circuit

... The ICS1561A has a VDDO pin which is the supply of +5 volt power to all output stages. This pin should be connected to the power plane (or bus) using standard high frequency decoupling practice. This decoupling consists of a low series inductance bypass capacitor, using the shortest leads possible, ...
NLB-300 3 CASCADABLE BROADBAND GaAs MMIC AMPLIFIER DC TO 10GHz
NLB-300 3 CASCADABLE BROADBAND GaAs MMIC AMPLIFIER DC TO 10GHz

M•1400/M•1400i High Current Power Amplifier Spec
M•1400/M•1400i High Current Power Amplifier Spec

...  The M•1400/M•1400i is rated at a continuous output of 250 watts per channel into 8Ω, 425 watts per channel into 4Ω and 630 watts into 2Ω. In bridge mode the M•1400/M•1400i is rated at 850 watts into 8Ω and 1260 watts into 4Ω. Variable low-cut filters on each channel, with a range from off to 170Hz ...
TPA2000D2 数据资料 dataSheet 下载
TPA2000D2 数据资料 dataSheet 下载

Side-Chain Filtering Issue 74
Side-Chain Filtering Issue 74

... original signal, compressing it, and then blending the compressed signal back into the original uncompressed signal. This process has the effect of increasing the perception of low-level material, and for this reasons it’s often referred to as ‘upward compression’. Although this process is often con ...
Design Document v0.9 - WordPress@UP
Design Document v0.9 - WordPress@UP

... REV. 0.9 ...
IOSR Journal of Applied Physics (IOSRJAP)
IOSR Journal of Applied Physics (IOSRJAP)

... signal. This tunability is obtained by varying the transconductance (gm) of the OTA which in turn is controlled by the bias current or voltage. However, tunability is restricted by the limited bandwidth of gm, which depends on the bias current. OTA is a commercially available active component which ...
“Enjoy the music you love effortlessly and wirelessly.”
“Enjoy the music you love effortlessly and wirelessly.”

Audio Component Interconnection - Pro
Audio Component Interconnection - Pro

... the type of headunit that will be the foundation of an entirely new mobile audio system. It is also very important to identify the type of headunit prior to connecting it into an existing audio system (such as an OEM upgrade) in the event it is not directly compatible. Additionally, identification of ...
Radar Signal Processing
Radar Signal Processing

... Incoherent integration of a moving target with interfering noise. Signal sum is greater than the noise, but not as much greater as it would be if the integration were coherent. With incoherent integration, the noise can never sum to zero. ...
video post processor
video post processor

... processing. A lower complexity FPGA would also be suitable. This post processor must be able to receive data at a 6 MHz rate, average the reset and signal samples, and perform the CDS. Averaging of the signals can help to improve the noise performance of the system. Averaging is analogous to inserti ...
Acoustic Coupler for Acquisition of Coronary Artery Murmurs
Acoustic Coupler for Acquisition of Coronary Artery Murmurs

Manual-amp heads + version R3
Manual-amp heads + version R3

... Our high-quality effects units offer 6 program selections: 3 reverb programs (Hall, Room and Plate), a delay, an ambient chorus and a flanger. There are switches to select which of the two channels are processed by the effects unit. Either channel can be connected to the effects unit. If both switch ...
MF1 Multi-Field Magnetic Speakers
MF1 Multi-Field Magnetic Speakers

... Each MF1 kit (serial number > 1200) also includes a USB drive containing several speaker-specific closed field and free field calibration curves (TCF files) made during final testing at TDT. These files were designed to be used with the BioSigRZ software. When using the MF1 speakers above 30kHz in f ...
Class D Audio Design Tips
Class D Audio Design Tips

Lab 10: Frequency Response of Filter Circuits
Lab 10: Frequency Response of Filter Circuits

Presented at AUDI the 100th Convention 1996 May 11
Presented at AUDI the 100th Convention 1996 May 11

m4.4 Signal Processing Circuits: (a) Design a two
m4.4 Signal Processing Circuits: (a) Design a two

... guitar. The first-stage amplifier applies a variable gain magnitude in the range 13.3 to 23.3 while the second-stage amplifier attenuates the signal by 13.3, i.e., the second-stage amplifier has a fixed gain of 1/13.3. Note that when the first-stage amplifier gain is 13.3 the overall distortion box ...
A Control Strategy for Hybrid Power Filter to Compensate Four
A Control Strategy for Hybrid Power Filter to Compensate Four

... waveform quality, which supplies their different systems. The nonlinear load can generate current harmonics and/or voltage harmonics, which makes worse the power quality. Therefore, these harmonics must be mitigating. In order to achieve this, series or parallel configurations or combinations of act ...
NEGATIVE FEEDBACK and APPLICATIONS
NEGATIVE FEEDBACK and APPLICATIONS

... 6dB/octave at frequencies well beyond the -3dB frequency. Such filters are sufficient for many multiple purposes. Often, however, filters with flatter pass-bands and steeper roll-off are needed. One solution may consists of cascading many RC filters, using buffer amplifiers (as indicated in Fig. 12) ...
a high-drive fully differential current mode operational
a high-drive fully differential current mode operational

... implemented as COA-RC ones by using adjoint network principle [3]. The circuit symbol of fully differential COA is reported in Figure 1. COA ideally exhibits zero input resistance and infinite output resistance and current gain. Differential signalling has many advantages such as; better noise perfo ...
Op Amp History
Op Amp History

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Audio crossover



Audio crossovers are a class of electronic filter used in audio applications. Most individual loudspeaker drivers are incapable of covering the entire audio spectrum from low frequencies to high frequencies with acceptable relative volume and absence of distortion so most hi-fi speaker systems use a combination of multiple loudspeaker drivers, each catering to a different frequency band. Crossovers split the audio signal into separate frequency bands that can be separately routed to loudspeakers optimized for those bands.Active crossovers are distinguished from passive crossovers in that they divide the audio signal prior to amplification. Active crossovers come in both digital and analog varieties. Digital active crossovers often include additional signal processing, such as limiting, delay, and equalization.Signal crossovers allow the audio signal to be split into bands that are processed separately before they are mixed together again. Some examples are: multiband dynamics (compression, limiting, de-essing), multiband distortion, bass enhancement, high frequency exciters, and noise reduction such as Dolby A noise reduction.
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