IEEE Transactions on Magnetics · 1995 · 10 citations · 2 references
EngineeringElectrical EngineeringAnalog ElectronicsBiomedical Signal ProcessingInstrumentationDigital Signal ProcessingMagnetic CharacterizationNeural Recording TechnologiesRecording TechniquesRecording TechnologyHigh-density Neural RecordingMagnetic RecordingMagnetic Recording MediaModulation Spectrum AnalysisSignal-to-noise RatioSignal-to-noise Ratio AnalysisSignal-to-noise Ratio EnhancementSignal-to-noise Ratio Optimization
This report describes a new method to emulate the magnetic recording channel. The use of asynchronous high frequency sampling eliminates the need for a phase locked loop circuit. By optimizing FIR filter tap weights with a least mean square algorithm, it has become possible to examine the signal-to-noise ratio of intrinsic head/media. Another method using the modulation spectrum to determine SNR is also described. The results suggest that both of methods will be a useful tool to help study high-density magnetic recording.
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