Per Åhgren

Title: The Innovations of Per Åhgren

Introduction

Per Åhgren is a notable inventor based in Knivsta, Sweden. He has made significant contributions to the field of audio signal processing, holding a total of 6 patents. His work focuses on improving acoustic echo cancellation and understanding the complexities of audio signals.

Latest Patents

One of his latest patents is titled "Residual echo detection based on non-causality." This invention involves methods and systems that detect residual echo in an audio signal in a non-causal manner. The non-causal residual echo detector allows for accurate detection of any residual echo from an acoustic echo canceller (AEC). This approach is advantageous as it enables the detection of residual echo even after the signal has undergone processing.

Another significant patent is "Estimation and suppression of harmonic loudspeaker nonlinearities." This invention includes a harmonic echo power estimator that estimates the power of echo generated by harmonic loudspeaker nonlinearities. The estimator utilizes a frequency band mapper and a power estimate combiner to provide accurate power estimates of the echo generated by the loudspeaker.

Career Highlights

Throughout his career, Per Åhgren has worked with prominent companies such as Telefonaktiebolaget Lm Ericsson and Google Inc. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking innovations in audio technology.

Collaborations

Per has collaborated with notable individuals in his field, including Anders K Eriksson and Zohra Yermeche. These collaborations have further enhanced his work and led to advancements in audio signal processing.

Conclusion

Per Åhgren's contributions to the field of audio technology through his patents and collaborations highlight his innovative spirit and dedication to improving audio signal processing. His work continues to influence the industry and pave the way for future advancements.