Digital technologies have significantly shaped the production and consumption of popular music over time. Early digital audio devices developed in the late 1970s allowed for convenient manipulation, storage, and transmission of audio. Sony's Walkman, introduced in 1979, was a revolutionary portable audio player and helped popularize personal audio devices. Further technological developments included the introduction of the compact disc in 1982, Digital Audio Tape in 1987, and MiniDisc in 1992. Each new format aimed to improve upon previous technologies but some, like DAT, saw only moderate commercial success. Digital audio players utilizing formats like MP3 achieved widespread popularity with the iPod's launch in 2001.
History of Digital Media from 1990 1999Zeeshan Shah
The digital media and Multimedia has recent history and this slide contains the information regarding the History of Digital media in details from 1990 to 1999 era.
In the year 1984, a young Steve Jobs unveiled the first Apple Macintosh computer with a verse from Bob Dylan’s famous song - “The times they are a changing”.
History of Digital Media from 1990 1999Zeeshan Shah
The digital media and Multimedia has recent history and this slide contains the information regarding the History of Digital media in details from 1990 to 1999 era.
In the year 1984, a young Steve Jobs unveiled the first Apple Macintosh computer with a verse from Bob Dylan’s famous song - “The times they are a changing”.
History of Digital Media from 1965 1989Zeeshan Shah
The digital media and Multimedia has recent This Slide contains the information regarding the History of Digital media in details from 1965 to 1989 era.
Pushing the limits of ePRTC: 100ns holdover for 100 daysAdtran
At WSTS 2024, Alon Stern explored the topic of parametric holdover and explained how recent research findings can be implemented in real-world PNT networks to achieve 100 nanoseconds of accuracy for up to 100 days.
In his public lecture, Christian Timmerer provides insights into the fascinating history of video streaming, starting from its humble beginnings before YouTube to the groundbreaking technologies that now dominate platforms like Netflix and ORF ON. Timmerer also presents provocative contributions of his own that have significantly influenced the industry. He concludes by looking at future challenges and invites the audience to join in a discussion.
A tale of scale & speed: How the US Navy is enabling software delivery from l...sonjaschweigert1
Rapid and secure feature delivery is a goal across every application team and every branch of the DoD. The Navy’s DevSecOps platform, Party Barge, has achieved:
- Reduction in onboarding time from 5 weeks to 1 day
- Improved developer experience and productivity through actionable findings and reduction of false positives
- Maintenance of superior security standards and inherent policy enforcement with Authorization to Operate (ATO)
Development teams can ship efficiently and ensure applications are cyber ready for Navy Authorizing Officials (AOs). In this webinar, Sigma Defense and Anchore will give attendees a look behind the scenes and demo secure pipeline automation and security artifacts that speed up application ATO and time to production.
We will cover:
- How to remove silos in DevSecOps
- How to build efficient development pipeline roles and component templates
- How to deliver security artifacts that matter for ATO’s (SBOMs, vulnerability reports, and policy evidence)
- How to streamline operations with automated policy checks on container images
GraphSummit Singapore | The Art of the Possible with Graph - Q2 2024Neo4j
Neha Bajwa, Vice President of Product Marketing, Neo4j
Join us as we explore breakthrough innovations enabled by interconnected data and AI. Discover firsthand how organizations use relationships in data to uncover contextual insights and solve our most pressing challenges – from optimizing supply chains, detecting fraud, and improving customer experiences to accelerating drug discoveries.
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
Threats to mobile devices are more prevalent and increasing in scope and complexity. Users of mobile devices desire to take full advantage of the features
available on those devices, but many of the features provide convenience and capability but sacrifice security. This best practices guide outlines steps the users can take to better protect personal devices and information.
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
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https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
Communications Mining Series - Zero to Hero - Session 1DianaGray10
This session provides introduction to UiPath Communication Mining, importance and platform overview. You will acquire a good understand of the phases in Communication Mining as we go over the platform with you. Topics covered:
• Communication Mining Overview
• Why is it important?
• How can it help today’s business and the benefits
• Phases in Communication Mining
• Demo on Platform overview
• Q/A
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
Elevating Tactical DDD Patterns Through Object CalisthenicsDorra BARTAGUIZ
After immersing yourself in the blue book and its red counterpart, attending DDD-focused conferences, and applying tactical patterns, you're left with a crucial question: How do I ensure my design is effective? Tactical patterns within Domain-Driven Design (DDD) serve as guiding principles for creating clear and manageable domain models. However, achieving success with these patterns requires additional guidance. Interestingly, we've observed that a set of constraints initially designed for training purposes remarkably aligns with effective pattern implementation, offering a more ‘mechanical’ approach. Let's explore together how Object Calisthenics can elevate the design of your tactical DDD patterns, offering concrete help for those venturing into DDD for the first time!
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
- For advanced developers: master the skills to efficiently apply PowSyBl functionalities to your real-world scenarios.
Unlocking Productivity: Leveraging the Potential of Copilot in Microsoft 365, a presentation by Christoforos Vlachos, Senior Solutions Manager – Modern Workplace, Uni Systems
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf91mobiles
91mobiles recently conducted a Smart TV Buyer Insights Survey in which we asked over 3,000 respondents about the TV they own, aspects they look at on a new TV, and their TV buying preferences.
2. Digital audio refers to technology that records, stores, and reproduces
sound by encoding an audio signal in digital form instead of analogue form.
Introducing digital audio…
Digital audio systems may include compression, storage, processing and
transmission components. Conversion to a digital format allows convenient
manipulation, storage, transmission and retrieval of an audio signal.
3. Sony developed the first digital audio recording devices to be used by
professional studios in 1978. The next year, Sony revolutionized the world of
personal audio with the introduction of the Walkman portable audio
cassette player, initially called the “Soundabout.”
Though compact disc technology emerged the following year, Sony went on
to sell over 100 million Walkman-like audio players—and that was in addition
to innumerable knock-offs by other manufacturers, even before personal
audio players evolved to play digital mediums such as compact discs (1988)
and minidiscs (1992).
The first commercially available digital audio players in the United States
using the MP3 format (which had been in development since 1987) would
launch the digital audio player revolution that achieved meteoric success
with the introduction of Apple’s iPod in 2001 (Holmes 2006).
Developing technologies…
4. (DAT or R-DAT) is a signal recording and playback medium developed by Sony and
introduced in 1987.[1] In appearance it is similar to a Compact Cassette, using 4 mm
magnetic tape enclosed in a protective shell, but is roughly half the size at 73 mm
54 mm 10.5 mm
Digital AudioTape (DAT)
DAT has the ability to record at higher, equal or lower
sampling rates than a CD (48, 44.1 or 32 kHz sampling
rate respectively) at 16 bits quantization. If a digital
source is copied then the DAT will produce an exact
clone, unlike other digital media such as Digital
Compact Cassette or non-Hi-MD MiniDisc, both of
which use a lossy data reduction system.
The technology of DAT is closely based on that of video recorders, using a rotating head and
helical scan to record data. This prevents DATs from being physically edited in the cut-and-
splice manner of analog tapes, or open-reel digital tapes like ProDigi or DASH.
Although intended as a replacement for audio cassettes,
the format was never widely adopted by consumers
because of issues of expense and concerns from the music
industry about unauthorized digital quality copies.The
format saw moderate success in professional markets and
as a computer storage medium.
5. More on DAT
Sony DCT-690 : DAT-Recorder
DigitalAudioTapeVs. Analogue Cassette
6. The compact disc, or CD for short, is an optical disc used to store digital data. The
format was originally developed to store and play back sound recordings only (CD-
DA), but was later adapted for storage of data (CD-ROM). Audio CDs and audio CD
players have been commercially available since October 1982.
Compact Disc (CD)
At the time of the technology's introduction it had more
capacity than computer hard drives common at the time.
The reverse is now true, with hard drives far exceeding
the capacity of CDs. The Compact Disc is an evolution of
LaserDisc technology. Prototypes were developed by
Philips and Sony independently from the mid-to-late
1970s.The two companies then collaborated to produce a
standard format and related player technology which was
made commercially available in 1982.
In 1974, an initiative was taken by L. Ottens, a director of the audio industry group
within the Philips Corporation in Eindhoven, the Netherlands. A seven-person
project group was formed to develop an optical audio disc with a diameter of 20 cm
with a sound quality superior to that of the large and fragile vinyl record. Later in
1979, Sony and Philips set up a joint task force of engineers to design a new digital
audio disc. First published in 1980, the standard was formally adopted by the IEC as
an international standard in 1987, with various amendments becoming part of the
standard in 1996.
7. How CDs are made
More on CD
A news report on the debut of the CD
8. DCC is a magnetic tape sound recording format introduced by Philips and Matsushita
in late 1992 and marketed as the successor to the standard analogue Compact
Cassette. DCC was envisaged as a cheaper alternative to DAT. DCC shared a similar
form factor to analogue cassettes, and DCC recorders could play back either type of
cassette. This backward compatibility allowed users to adopt digital recording
without rendering their existing tape collections obsolete.
Digital Compact Cassette (DCC)
DCC signalled the parting of ways of Philips and Sony,
who had worked together successfully on the Compact
Disc, CD-ROM and CD-i before. Based on the success of
Digital AudioTape in professional environments, both
companies saw a market for a new consumer-oriented
digital audio recording system that would be less
expensive and perhaps less fragile. DCC was developed in
cooperation with Matsushita, and the first DCC recorders
were introduced at the Firato consumer electronics show
in Amsterdam in 1992.
DCC used a Magneto-Resistive (MR) head, which was fixed to the mechanism of the
player/recorder, unlike rotary heads that are used in helical scan systems such as DAT orVHS to
increase head-to-tape speed
10. MiniDisc was announced by Sony in September 1992 and released that November for sale
in Japan and in December for the USA and Europe. The music format was originally based
exclusively on ATRAC audio data compression, but the option of linear PCM digital
recording was later introduced to attain audio quality comparable to that of a compact
disc. MiniDiscs were very popular in Japan but made a limited impact elsewhere.
MiniDisc (MD)
MD Data, a version for storing computer data, was
announced by Sony in 1993 but never gained significant
ground. Its media were incompatible with standard audio
MiniDiscs, which has been cited as one of the main reasons
behind the format's failure. MiniDisc has a feature that
prevents disc skipping under all but the most extreme
conditions. Older CD players had once been a source of
annoyance to users as they were prone to mistracking from
vibration and shock.
The size of the buffer varies by model.The data structure and operation of a MiniDisc is similar
to that of a computer's hard disk drive.The bulk of the disc contains data pertaining to the
music itself, and a small section contains theTable of Contents.Tracks and discs can be
named, and may easily be added, erased, combined and divided, and their preferred order of
playback modified. Erased tracks are not actually erased at the time.When a disc becomes
full, the recorder can simply slot track data into sections where erased tracks reside
MiniDisc solved this problem by reading the data into a memory buffer at a higher speed than
was required before being read out to the digital-to-analogue converter at the standard rate
required by the format.
11. DVD-Audio offers many possible configurations of audio channels, ranging from single-
channel mono to 5.1-channel surround sound, at various sampling frequencies and sample
rates. Compared to the Compact Disc, the much higher capacity DVD format enables the
inclusion of either:
-Considerably more music (with respect to total running time and quantity of songs) or
-Far higher audio quality, reflected by higher linear sampling rates and higher bit-per-
sample resolution, and/or
-Additional channels for spatial sound reproduction.
DVD-Audio (DVD A)
The fidelity of the upsampled audio
will be limited by the source material
quality, when the master recording is
in digital format, and may not exceed
the quality of existing CD releases of
the same albums. DVD-Audio supports
bit depths up to 24-bit and sample
rates up to 192 kHz, while CD audio is
16-bit, 44.1 kHz. DVD-Audio discs may
optionally employ a copy protection
mechanism called Content Protection
for Prerecorded Media (CPPM).
12. DVD A being used as home theatre
More on DVD Audio