Key takeaways:
- Voice quality testing is the process of evaluating and measuring audio performance in communication systems to identify and resolve issues like choppy audio, echoing, and dropped calls.
- Poor voice quality in online classrooms stems from specific causes including network latency, bandwidth constraints, packet loss, codec incompatibility, and hardware issues.
- Automated voice quality testing offers greater accuracy, scalability, and consistency compared to manual testing approaches.
- VoIP systems enable virtual learning but require proactive testing to ensure teachers and students can communicate clearly.
The COVID-19 pandemic completely changed the way that people communicate, leading to the rapid rise in video-conferencing software. While many of us are well acquainted with remote work via Zoom or Microsoft Teams, the education sector also had to contend with social distancing and online or hybrid classrooms.
Cyara’s automated voice quality testing solutions empower you to test and monitor CX performance from every perspective.
For many teachers and students alike, the swift change to remote teaching led to plenty of obstacles. Clear communication is necessary for the classroom environment, but many teachers have experienced audio quality issues, making it impossible to connect with their students. Research indicates that poor audio quality can reduce student comprehension by up to 25%, significantly impacting learning outcomes.
Voice quality testing is the process of evaluating and measuring audio performance in communication systems to identify issues, assess clarity, and confirm optimal sound transmission between parties. Poor voice quality can lead to specific issues including:
- Network latency: Delays in audio transmission causing conversation lag
- Bandwidth constraints: Insufficient data capacity resulting in compressed or degraded audio
- Packet loss: Missing audio data leading to choppy or broken sound
- Codec incompatibility: Mismatched audio encoding causing distortion
- Hardware issues: Faulty microphones or speakers affecting sound input and output
In the classroom environment, where all parties must be able to properly understand one another, voice quality testing is a must. Since 2020, virtual learning settings have only continued to evolve, but teachers and students will only find success when the behind-the-scenes infrastructure meets their needs and facilitates an engaging environment, without any additional issues getting in the way of education.
The role of VoIP systems for virtual learning
Voice over Internet Protocol (VoIP) is a technology that enables voice and multimedia communication by compressing audio data and transmitting it over the internet to a receiver, where it is decompressed back into audible sound. VoIP phone systems, such as Zoom or Microsoft Teams, use this technology to facilitate real-time communication. And while these types of systems are often used in business settings and for personal communications, they have also transformed the way virtual learning is conducted.
Online classrooms can use many of the features included in VoIP phone systems such as testing, video calling, and in-app chat. These tools make it possible for teachers to connect with their students in live sessions and enable two-way communications when speaking with students across the internet, no matter where in the world they’re located.
Teachers, students, and educational institutions benefit from VoIP software in several ways, including:
- Video calling: Teachers can have face-to-face interactions with their students to improve their engagement and offer more personalized instruction.
- Screen sharing capabilities: VoIP systems support screen sharing, making it possible for teachers to provide better visual and interactive presentations.
- Group video conferences: With VoIP systems, teachers can also set up video conferences for group sessions or seminars. This type of instruction can facilitate group discussions and collaborative learning.
However, voice quality is essential to take advantage of these features. CX defects can make it difficult for teachers and students to understand one another, which hinders education and leads to increased frustration for all parties. But with a voice quality testing solution, you can easily identify and remediate these issues that cause choppy audio, echoing, and poor voice quality.
What can voice quality testing tell you?
Voice quality testing reveals the actual audio experience users encounter, providing measurable data on clarity, latency, and overall call performance. VoIP systems help teachers and students connect and create an environment conducive to learning, but testing is critical so your institution can take advantage of the many features and benefits of VoIP systems. Simply put, voice quality testing isn’t optional—it’s a crucial element to delivering seamless caller experiences.
Testing voice quality is often a challenge for contact centers, as there are many variables that can affect voice quality. From network issues to bandwidth constraints or hardware incompatibility, it can be difficult to pinpoint the underlying cause of issues.
Manual vs. automated voice quality testing
| Aspect | Manual testing | Automated testing |
| Accuracy | Subject to human error and subjective interpretation | Consistent, objective measurements using standardized metrics |
| Scalability | Limited by available personnel and time | Can test thousands of scenarios simultaneously |
| Consistency | Varies based on tester experience and conditions | Repeatable results across all test cycles |
| Cost | Higher long-term labor costs | Lower per-test cost at scale |
| Speed | Time-consuming, resource-intensive | Rapid execution and real-time reporting |
With an automated voice quality testing solution, you can verify performance at every stage of the development lifecycle. In the event your teachers or students encounter issues in the live environment, your teams can better understand where improvements must be made to identify and remediate issues.
Understanding voice quality metrics
The following industry-standard metrics help quantify audio quality objectively:
- Mean opinion score (MOS): A numerical measure of voice quality ranging from 1 (poor)-5 (excellent), representing the average rating a typical user would give to the audio quality.
- Perceptual evaluation of speech quality (PESQ): An automated testing algorithm that compares original and degraded audio signals to predict the MOS score users would assign.
A voice quality testing solution empowers you to understand audio quality from all perspectives. Automated tests provide real-time, data-driven reports, so you can track and measure audio performance. And compared to manual tests, an automated solution makes it possible to execute tests faster than ever before, so you can improve your system’s efficiency and scalability, without any unintentional defects getting in the way of learning.
Assure voice quality with Cyara
VoIP systems have completely transformed communication. Within the educational sector, the ability to transmit voice over the internet has enabled engaging interactions between teachers and students, ensuring they can connect in the virtual classroom regardless of where they are in the world. However, VoIP systems can encounter issues that may impede education with choppy audio or poor voice quality.
A voice quality testing solution is necessary to harness the full capabilities and benefits of VoIP by proactively testing, identifying, and resolving issues, so your teachers and students can focus on their lessons.
The Cyara Agentic Platform helps you take your communications to the next level with its automated voice quality testing solution. With Cyara’s voice quality testing solution, you can:
- Uncover your true call experience from every perspective.
- Deliver flawless experiences through quality connections.
- Access objective audio quality scores.
Ready to improve your virtual classroom audio quality? Contact Cyara to schedule a demo or visit cyara.com for more information.
Frequently Asked Questions
Clear audio ensures students can understand instruction without strain or confusion, directly impacting comprehension, engagement, and learning outcomes in virtual environments.
A MOS score of 4.0 or higher typically indicates good voice quality, while scores below 3.5 may result in noticeable audio issues that affect communication clarity.
Common causes include network latency, insufficient bandwidth, packet loss during transmission, codec incompatibility between systems, and faulty audio hardware.
Voice quality testing evaluates audio performance across a VoIP system to identify issues like choppy audio, echoing, and dropped calls. In virtual classrooms, clear communication is essential, making voice quality testing a critical part of ensuring teachers and students can connect without disruption.
VoIP systems like Zoom and Microsoft Teams offer video calling, screen sharing, and group video conferencing, all of which support interactive and collaborative learning. However, these features are only effective when voice quality is consistently clear and reliable.
Poor voice quality can stem from network issues, bandwidth constraints, or hardware incompatibility. Identifying the root cause can be difficult without a dedicated testing solution.
Manual testing is costly, time-consuming, and can only verify a fraction of your infrastructure. Automated testing provides real-time, data-driven reports and can execute tests faster, improving efficiency and scalability across every stage of the development lifecycle.
