Cerence Operating Company

Nuance Communications, Inc.

Julien Premont

Markus Buck

Timo Matheja

Tim Haulick

Friedrich Faubel

Martin Roessler

Josef Anastasiadis

Christophe Ris

Stijn Verschaeren

Rudi Vuerinckx

Hakan Ari

Andreas Kirbach

Dieter Ranz

There is provided a speech dialog system that includes a first microphone, a second microphone, a processor and a memory. The first microphone captures first audio from a first spatial zone, and produces a first audio signal. The second microphone captures second audio from a second spatial zone, and produces a second audio signal. The processor receives the first audio signal and the second audio signal, and the memory contains instructions that control the processor to perform operations of a speech enhancement module, an automatic speech recognition module, and a speech dialog module that performs a zone-dedicated speech dialog.

Multi-microphone speech dialog system for multiple spatial zones

A system and method for detecting multi-tone sirens despite environmental noises that may be present obtains a microphone input signal, applies, in real time, a time-frequency analysis to the microphone input signal to determine a time-frequency representation, provides at least one multi-tone model that has a plurality of tone duration patterns, performs multi-tone siren detection on the time-frequency representation, the detection based on the at least one multi-tone model and factoring of doppler shifts, and generates a detection result that can be used in systems for automated vehicles.

System and method for acoustic detection of emergency sirens

Methods and apparatus for frequency selective signal mixing for speech enhancement. In one embodiment frequency-based channel selection is performed for signal magnitude, signal energy, and noise estimate using speaker activity detection information, signal-to-noise ratio, and/or signal level, Frequency-based channel selection is performed for a dynamic spectral floor to adjust the noise estimate using speaker dominance information. Noise reduction is performed on the signal for the selected channel.

Methods and apparatus for selective microphone signal combining

Growing community of inventors

Neu-Ulm, Germany

Julien Premont