In signal processing, a root-raised-cosine filter (RRC), sometimes known as square-root-raised-cosine filter (SRRC), is frequently used as the transmit and receive pulse shaping filter in a digital communication system to perform matched filtering. This helps in constraining the occupied bandwidth of the waveform without introducing intersymbol interference (ISI). The combined response of two such filters is that of the raised-cosine filter. It obtains its name from the fact that its frequency response, H r r c ( f ) {\displaystyle H_{rrc}(f)} , is the square root of the frequency response of the raised-cosine filter, H r c ( f ) {\displaystyle H_{rc}(f)} :
Cosine similarity
In data analysis, cosine similarity is a measure of similarity between two non-zero vectors defined in an inner product space. Cosine similarity is the cosine of the angle between the vectors; that is, it is the dot product of the vectors divided by the product of their lengths. It follows that the cosine similarity does not depend on the magnitudes of the vectors, but only on their angle. The cosine similarity always belongs to the interval [ − 1 , + 1 ] . {\displaystyle [-1,+1].} For example, two proportional vectors have a cosine similarity of +1, two orthogonal vectors have a similarity of 0, and two opposite vectors have a similarity of −1. In some contexts, the component values of the vectors cannot be negative, in which case the cosine similarity is bounded in [ 0 , 1 ] {\displaystyle [0,1]} .
Sinc function
In mathematics, physics and engineering, the sinc function ( SINK), denoted by sinc(x), is defined as either or
Third Wave (Commercial) Open Source
Commercial Open Source Software (COSS) is an only-loosely-agreed-upon term for businesses built upon selling open source products. COSS has seen two significant waves pass, with a third now emerging. The head of each wave lasts approximately a decade. The tail of each wave extends into the future indefinitely. Each wave subsumes all previous waves. The first wave was characterized by shrinkwrapping and commercial support. Peaking in the mid-1990s, Red Hat was the poster-child of selling support for software written by other people.
This documents the regular HTTP API served by the radio backend. It excludes the
le0pard/re2js
RE2JS is the JavaScript port of RE2, a regular expression engine that provides linear time matching
Coroutines in C
[Coroutines trilogy: C preprocessor | C++20 native | general philosophy ]
Sine, Saw, Square, Triangle, Pulse: Basic Waveforms in Synthesis and Their Properties
Learn the properties of 5 basic waveforms in sound synthesis to use their full potential in your synthesizer performance or design.
暗号化メッセージアプリ「Signal」の使い方
エンドツーエンド暗号化が施されたメッセージアプリSignalには、メッセージを安全にやりとりするための機能が多数備わっている。ここでは特に注目すべき機能を紹介する。
FiiO RR11 Portable HiFi FM Stereo Radio Receiver with Analog PVR Tuning, BASS+3D Sound Effects, 64MHz-108MHz (Titanium Gold)
Buy FiiO RR11 Portable HiFi FM Stereo Radio Receiver with Analog PVR Tuning, BASS+3D Sound Effects, 64MHz-108MHz (Titanium Gold): Personal Radios - Amazon.com ✓ FREE DELIVERY possible on eligible purchases
Derivatives of Spherical Harmonics
Christoph Peters. 2025–06 in High-Performance Graphics 2025. Poster.
SCI — Software Carbon Intensity | Green Software Foundation
The global standard for calculating and reducing the carbon emissions of your software. ISO/IEC 21031:2024.
総務省、「pixiv」「note」など情プラ法の「大規模プラットフォーム事業者」に追加、誹謗中傷への迅速な対応など求める 「ガールズちゃんねる」「好き嫌い.com」含む4者が対象
総務省は8月31日、特定電気通信による情報の流通によって発生する権利侵害等への対処に関する法律（情報流通プラットフォーム対処法、情プラ法）第20条第1項に基づき、大規模特定電気通信役務提供者（大規模プラットフォーム事業者）の指定を行った。
総務省がグーグルやXなど5社に勧告 情プラ法に基づく報告に不備：朝日新聞
総務省は24日、米グーグルなど5社に対し、インターネット上の誹謗（ひぼう）中傷への対策を定めた「情報流通プラットフォーム対処法」（情プラ法）にもとづく是正勧告をした。悪質な投稿への対応状況などを公表…
GitHub - creativecommons/cc-signals: CC signals is a framework for a simple pact between those stewarding data, and those reusing it for AI development. CC signals provide a set of shared ground rules for an AI ecosystem that is mutually beneficial.
CC signals is a framework for a simple pact between those stewarding data, and those reusing it for AI development. CC signals provide a set of shared ground rules for an AI ecosystem that is mutua...