Patents by Inventor PREM CHAND PANDEY

PREM CHAND PANDEY has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210329389
    Abstract: Hearing aids for persons with sensorineural hearing loss aim to compensate for degraded speech perception caused by frequency-dependent elevation of hearing thresholds, reduced dynamic range, abnormal loudness growth, and increased temporal and spectral masking. A digital hearing aid is implemented as a smartphone application as an alternative to ASIC-based hearing aids. The implementation provides user-configurable processing for background noise suppression and dynamic range compression. Both processing blocks are implemented for real-time processing using single FFT-based analysis-synthesis. A touch-controlled graphical user interface enables the user to set and fine-tune the processing parameters in an interactive and real-time mode.
    Type: Application
    Filed: August 30, 2019
    Publication date: October 21, 2021
    Inventors: Prem Chand PANDEY, Nitya TIWARI, Saketh SHARMA
  • Publication number: 20200251260
    Abstract: A circuit for realizing a precision and linear floating resistor, using MOSFET devices, is disclosed. A linear floating voltage-controlled resistor (LFVCR) is realized using a MOSFET with a gate drive means and a substrate drive means to provide a feedback of the common-mode voltage across the source-drain terminals to the gate and substrate terminals. Two such LFVCR circuits using matched MOSFET devices having independent substrates, along with an op-amp based negative feedback loop, are used to realize a continuously variable precision and linear floating resistor, whose value can be controlled by a combination of variable voltage, current, and resistor. Further embodiments are disclosed for realizing a resistor mirror circuit with multiple floating resistors, improving the linearity by using LFVCR circuits with complementary MOSFET devices, realizing a resistor with scaled-up resistance and extended voltage range, and realizing a resistor with scaled-down resistance and extended current range.
    Type: Application
    Filed: November 16, 2018
    Publication date: August 6, 2020
    Applicant: INDIAN INSTITUTE OF TECHNOLOGY BOMBAY
    Inventors: Prem Chand PANDEY, Shibam DEBBARMA, Marla VIKAS, Nitya TIWARI, Rani HOLANI, Dinesh Kumar SHARMA
  • Publication number: 20160336015
    Abstract: Dynamic range compression in the hearing aids is provided for restoring normal loudness of low level sounds without making the high level sounds uncomfortably loud. An apparatus along with a method using sliding-band compression is disclosed for significantly reducing the temporal and spectral distortions generally associated with the currently used single and multiband compression techniques. It; uses a frequency-dependent gain function calculated on the basis of auditory critical bandwidth based short-time power spectrum and the specified hearing thresholds, compression ratios, and attack and release times. It is realized using FFT-based analysis-synthesis and can be integrated with other FFT-based signal processing in hearing aids and audio systems.
    Type: Application
    Filed: January 27, 2015
    Publication date: November 17, 2016
    Applicant: Institute of Technology Bombay
    Inventors: PREM CHAND PANDEY, Nitya Tiwari