links.md

Chatterbox Links/References

Some are local copies, see /reference

Formant-based Speech Synthesis

• Chatterbox [Witten & Madams, 1978]

• The Source-Filter Model of Speech Production

• Formant (Wikipedia)

• Analysis, synthesis, and perception of voice quality variations among female and male talkers

• Software for a cascade/parallel formant synthesizer

Dennis H. Klatt, the author of the two papers above has a wealth of other related material

• eSpeakNG - mature open-source project for formant-based speech synthesis

• Faust

• Linear predictive coding

• Speak & Spell

Speech

• Source-Filter Model
• Speech Synthesis and Recognition - local, remote copy (book)

Speech Processing Lecture Slides (very wide in scope, but good summaries of each bit)

From Texas A&M University, CSCE 689-604: Special Topics in Speech Processing, cource material

• L1 : Course Introduction

• L2 : Speech production and perception

• L3 : Organization of speech sounds - good overview slides

• L4 : Signals and transforms (slides)

• L5 : Digital filters (slides)

• L6 : Short-time Fourier analysis and synthesis (slides)

• L7 : Linear prediction of speech

• L8 : Source estimation

• L9 : Cepstral analysis

• L10 : Probability, statistics, and estimation theory

• L11 : Pattern recognition principles

• L12 : Template matching

• L13 : hidden Markov models

• L14 : Refinements for HMMs

• L15 : Large vocabulary continuous speech recognition

• L16 : Speaker recognition

• L17 : Speech synthesis (front-end)

• L18 : Speech synthesis (back end)

• L19 : Prosodic modification of speech

• L20 : Voice Conversion

• L21 : HTK (HTK is a toolkit for building Hidden Markov Models primarily designed for building speech recognizers)

• Voice Acoustics

• Voice Acoustics: an introduction

• Phonetics

• Acoustic structure of consonants

• Gunnar Fant Publications

• A Four-Parameter Model of Glottal Flow (LF-model)

• The LF-model revisited. Transformations and frequency domain analysis

• LF-frequency domain analysis

• Are Measured Differences Between the Formants of Men, Women and Children Due to FO Differences?

• Relative contribution of envelope and fine structure to the subcortical encoding of noise-degraded speech

• Temporal information in speech: acoustic, auditory and linguistic aspects

• Dynamics: The Third Dimension of Speech

• Spectral balance as an acoustic correlate of linguistic stress

• Detection of shouted speech in noise: Human and machine

• Sopranos: resonance tuning and vowel changes

• FORENSIC ANALYSIS OF THE AUDIBILITY OF FEMALE SCREAMS

• Modeling and Analyzing the Vocal TRact under Normal and Stressful Talking Conditions

• On chaotic nature of speech signals

DSP

Online Books

• Mathematics of the Discrete Fourier Transform (DFT)
• Introduction to Digital Filters (uses MATLAB)
• Physical Audio Signal Processing
• Spectral Audio Signal Processing

Wavetables etc.

• the_synth

• Alias-Free Digital Synthesis of Classic Analog Waveforms

• Table Lookup Oscillators Using Generic Integrated Wavetables

• Pink Noise bits

Filters

• Digital Filters For Music Synthesis

• musicdsp.org

• KVR Forum

• Biquads (blog - a lot of other stuff)

• The digital state variable filter

• Introduction to Digital Filters with Audio Applications

• A Collection of Useful C++ Classes for Digital Signal Processing

• DSP Tips & Tricks

• Cytomic technical papers (includes the derivation of SvfLinearTrapOptimised2)

• Common-DSP (includes implementation of SvfLinearTrapOptimised2)

Fixed-point maths

• Fixed Point Math Library for C
• related thread on StackOverflow

ESP32

• ESP32 Projects & Tutorials

• ESP32 Peripherals

• ESP32 Pinout Reference: Which GPIO pins should you use?

• The best input and output pins on the NodeMCU ESP32 and ESP8266 (YouTube)

• ESP32 ADC – Read Analog Values with Arduino IDE

• Using the ESP32 ADC and some of its more advanced functions (YouTube)

• esp32-dac

• ESP32-ADC-Accuracy-Improvement-function

• Polynomial Regression Data Fit

• ESP-IDF Hello World

• ESP-IDF ADC API

• ESP-DSP

• ESP32 Parallel Programming

• Debouncing a Button Press using Interrupts

ESP32/HTTP

• ESP32 Arduino: Asynchronous HTTP web server
• ESP32 Web Server using SPIFFS (SPI Flash File System)
• Install ESP32 Filesystem Uploader in Arduino IDE
• Async Web Server for ESP8266 and ESP32
• Async TCP Library for ESP32
• ESP32 HTTP webserver: receiving textual data in websocket

DAC

UDA1334ATS Info

/// unsorted

https://www2.ling.su.se/staff/hartmut/T_1988_phonetica.pdf

http://www.speech.kth.se/gunnarfant/publications.html

http://www.phon.ox.ac.uk/jcoleman/consonant_acoustics.htm

https://forum.arduino.cc/index.php?topic=38153.0

https://www.quora.com/How-can-an-IoT-device-connect-to-a-WiFi-network-without-manually-entering-the-password-or-using-a-cable-to-another-device

https://create.arduino.cc/projecthub/chnry/ocs-2-a-digital-semi-modular-synthesizer-733ba9

https://www.soundonsound.com/techniques/synthesizing-wind-instruments?amp

---

https://makezine.com/2017/04/11/how-to-set-up-your-own-lab/

http://www.radiofreerobotron.net/blog/2016/07/06/how-to-zero-delay-state-variable-filter-part-3/

https://www.musicdsp.org/en/latest/Filters/23-state-variable.html

https://music.stackexchange.com/questions/74483/what-does-a-wave-with-all-even-harmonics-sound-like

https://randomnerdtutorials.com/esp32-web-server-spiffs-spi-flash-file-system/

https://techtutorialsx.com/2018/02/03/esp32-arduino-async-server-controlling-http-methods-allowed/amp/

https://randomnerdtutorials.com/esp32-web-server-spiffs-spi-flash-file-system/

https://randomnerdtutorials.com/esp32-web-server-spiffs-spi-flash-file-system/

https://makezine.com/2017/04/11/how-to-set-up-your-own-lab/

https://www.google.com/search?q=manatee&client=ms-android-doogee&prmd=ivn&sxsrf=ALeKk02ObPyWfESA_S81m0hdLke28x5_4Q:1582921135348&source=lnms&tbm=isch&sa=X&ved=2ahUKEwi58urfiPXnAhWTzcQBHV6BCboQ_AUoAXoECBQQAQ&biw=320&bih=512&dpr=1.5

https://www.fischl.de/projects/

https://newt.phys.unsw.edu.au/jw/graphics/Wolfe-et-al-Source-Filter.png

https://newt.phys.unsw.edu.au/jw/voice.html

https://newt.phys.unsw.edu.au/jw/voice.html

https://en.wikibooks.org/wiki/Sound_Synthesis_Theory/Oscillators_and_Wavetables

https://www.musicdsp.org/en/latest/Synthesis/244-direct-pink-noise-synthesis-with-auto-correlated-generator.html

http://www.fon.hum.uva.nl/praat/

https://github.com/espressif/esp-idf/tree/f91080637c054fa2b4107192719075d237ecc3ec/examples/peripherals/i2s

https://swphonetics.com/praat/introduction/

https://dsp.stackexchange.com/questions/5959/add-odd-even-harmonics-to-signal

https://www.reddit.com/r/esp32/comments/f6kjqh/serial_speed_too_slow_add_a_100nf_capacitor/

https://www.bbc.co.uk/news/av/world-50116478/thirty-mummies-in-wooden-coffins-found-in-egypt