HTTP/2 200
x-guploader-uploadid: AAwnv3K8bMAUKWU1k7MCxH96dT41WBB0P7dg66Y5AZMZn5--S_4_SqXMm_fWZiEPU81Tiba3
x-goog-generation: 1760058288031969
x-goog-metageneration: 1
x-goog-stored-content-encoding: identity
x-goog-stored-content-length: 143120
x-goog-meta-goog-reserved-file-mtime: 1760056825
x-goog-hash: crc32c=Vy9kXQ==, md5=+5rd4PbpY/4qTWLgqw2GWg==
x-goog-storage-class: STANDARD
accept-ranges: none
expires: Sun, 12 Oct 2025 09:36:43 GMT
cache-control: public, max-age=3600
last-modified: Fri, 10 Oct 2025 01:04:48 GMT
etag: W/"fb9adde0f6e963fe2a4d62e0ab0d865a"
content-type: text/html
age: 0
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
alt-svc: clear
referrer-policy: strict-origin-when-cross-origin
x-content-type-options: nosniff
strict-transport-security: max-age=63072000
content-security-policy: default-src 'self'; script-src 'report-sample' 'self' 'wasm-unsafe-eval' https://www.google-analytics.com/analytics.js https://www.googletagmanager.com/gtag/js assets.codepen.io production-assets.codepen.io https://js.stripe.com 'sha256-XNBp89FG76amD8BqrJzyflxOF9PaWPqPqvJfKZPCv7M=' 'sha256-YCNoU9DNiinACbd8n6UPyB/8vj0kXvhkOni9/06SuYw=' 'sha256-PZjP7OR6mBEtnvXIZfCZ5PuOlxoDF1LDZL8aj8c42rw='; script-src-elem 'report-sample' 'self' 'wasm-unsafe-eval' https://www.google-analytics.com/analytics.js https://www.googletagmanager.com/gtag/js assets.codepen.io production-assets.codepen.io https://js.stripe.com 'sha256-XNBp89FG76amD8BqrJzyflxOF9PaWPqPqvJfKZPCv7M=' 'sha256-YCNoU9DNiinACbd8n6UPyB/8vj0kXvhkOni9/06SuYw=' 'sha256-PZjP7OR6mBEtnvXIZfCZ5PuOlxoDF1LDZL8aj8c42rw='; style-src 'report-sample' 'self' 'unsafe-inline'; object-src 'none'; base-uri 'self'; connect-src 'self' developer.allizom.org bcd.developer.allizom.org bcd.developer.mozilla.org updates.developer.allizom.org updates.developer.mozilla.org https://*.google-analytics.com https://*.analytics.google.com https://*.googletagmanager.com https://incoming.telemetry.mozilla.org https://observatory-api.mdn.allizom.net https://observatory-api.mdn.mozilla.net https://api.github.com/search/issues stats.g.doubleclick.net https://api.stripe.com; font-src 'self'; frame-src 'self' interactive-examples.mdn.mozilla.net interactive-examples.mdn.allizom.net mdn.github.io live-samples.mdn.mozilla.net live-samples.mdn.allizom.net *.mdnplay.dev *.mdnyalp.dev *.play.test.mdn.allizom.net https://v2.scrimba.com https://scrimba.com jsfiddle.net www.youtube-nocookie.com codepen.io survey.alchemer.com https://js.stripe.com; img-src 'self' data: *.githubusercontent.com *.googleusercontent.com *.gravatar.com mozillausercontent.com firefoxusercontent.com profile.stage.mozaws.net profile.accounts.firefox.com developer.mozilla.org mdn.dev interactive-examples.mdn.mozilla.net interactive-examples.mdn.allizom.net wikipedia.org upload.wikimedia.org https://mdn.github.io/shared-assets/ https://mdn.dev/ https://*.google-analytics.com https://*.googletagmanager.com www.gstatic.com; manifest-src 'self'; media-src 'self' archive.org videos.cdn.mozilla.net https://mdn.github.io/shared-assets/; child-src 'self'; worker-src 'self';
x-frame-options: DENY
origin-trial: AxVILwizhbMjxFeHOn1P3R8niO1RJY/smaK4B4d1rLzc1gTaxtXMSaTi+FoigYgCw40uFRDwFcEAeqDR+vVLOW4AAABfeyJvcmlnaW4iOiJodHRwczovL2RldmVsb3Blci5tb3ppbGxhLm9yZyIsImZlYXR1cmUiOiJQcml2YXRlQXR0cmlidXRpb25WMiIsImV4cGlyeSI6MTc0MjA3OTYwMH0=
x-cloud-trace-context: 81d79cb22f16b372ab6b46fab805ae73
date: Sun, 12 Oct 2025 08:36:43 GMT
server: Google Frontend
via: 1.1 google
vary: Accept-Encoding
content-encoding: gzip
x-cache: miss
BaseAudioContext: createIIRFilter() method - Web APIs | MDN
createIIRFilter(feedforward, feedback)
feedforward
An array of floating-point values specifying the feedforward (numerator)
coefficients for the transfer function of the IIR filter. The maximum length of this
array is 20, and at least one value must be nonzero.
feedback
An array of floating-point values specifying the feedback (denominator) coefficients
for the transfer function of the IIR filter. This array may have up to 20 members, the
first of which must not be zero.
An IIRFilterNode
InvalidStateError DOMException
Thrown if all of the feedforward coefficients are 0, or if the first
feedback coefficient is 0.
NotSupportedError DOMException
Thrown if one or both of the input arrays exceeds 20 members.
